90900000

素因数分解:

$2^5\times 3^2\times 5^5\times {\mathrm{101}}^1$

素因数の和:142

約数の個数: 216

約数和(自身を含む): 326299428

約数和(自身を除く): 235399428

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 32, 36, 40, 45, 48, 50, 60, 72, 75, 80, 90, 96, 100, 101, 120, 125, 144, 150, 160, 180, 200, 202, 225, 240, 250, 288, 300, 303, 360, 375, 400, 404, 450, 480, 500, 505, 600, 606, 625, 720, 750, 800, 808, 900, 909, 1000, 1010, 1125, 1200, 1212, 1250, 1440, 1500, 1515, 1616, 1800, 1818, 1875, 2000, 2020, 2250, 2400, 2424, 2500, 2525, 3000, 3030, 3125, 3232, 3600, 3636, 3750, 4000, 4040, 4500, 4545, 4848, 5000, 5050, 5625, 6000, 6060, 6250, 7200, 7272, 7500, 7575, 8080, 9000, 9090, 9375, 9696, 10000, 10100, 11250, 12000, 12120, 12500, 12625, 14544, 15000, 15150, 16160, 18000, 18180, 18750, 20000, 20200, 22500, 22725, 24240, 25000, 25250, 28125, 29088, 30000, 30300, 36000, 36360, 37500, 37875, 40400, 45000, 45450, 48480, 50000, 50500, 56250, 60000, 60600, 63125, 72720, 75000, 75750, 80800, 90000, 90900, 100000, 101000, 112500, 113625, 121200, 126250, 145440, 150000, 151500, 180000, 181800, 189375, 202000, 225000, 227250, 242400, 252500, 300000, 303000, 315625, 363600, 378750, 404000, 450000, 454500, 505000, 568125, 606000, 631250, 727200, 757500, 900000, 909000, 946875, 1010000, 1136250, 1212000, 1262500, 1515000, 1818000, 1893750, 2020000, 2272500, 2525000, 2840625, 3030000, 3636000, 3787500, 4545000, 5050000, 5681250, 6060000, 7575000, 9090000, 10100000, 11362500, 15150000, 18180000, 22725000, 30300000, 45450000, 90900000]

約数ペア:

[(1, 90900000), (2, 45450000), (3, 30300000), (4, 22725000), (5, 18180000), (6, 15150000), (8, 11362500), (9, 10100000), (10, 9090000), (12, 7575000), (15, 6060000), (16, 5681250), (18, 5050000), (20, 4545000), (24, 3787500), (25, 3636000), (30, 3030000), (32, 2840625), (36, 2525000), (40, 2272500), (45, 2020000), (48, 1893750), (50, 1818000), (60, 1515000), (72, 1262500), (75, 1212000), (80, 1136250), (90, 1010000), (96, 946875), (100, 909000), (101, 900000), (120, 757500), (125, 727200), (144, 631250), (150, 606000), (160, 568125), (180, 505000), (200, 454500), (202, 450000), (225, 404000), (240, 378750), (250, 363600), (288, 315625), (300, 303000), (303, 300000), (360, 252500), (375, 242400), (400, 227250), (404, 225000), (450, 202000), (480, 189375), (500, 181800), (505, 180000), (600, 151500), (606, 150000), (625, 145440), (720, 126250), (750, 121200), (800, 113625), (808, 112500), (900, 101000), (909, 100000), (1000, 90900), (1010, 90000), (1125, 80800), (1200, 75750), (1212, 75000), (1250, 72720), (1440, 63125), (1500, 60600), (1515, 60000), (1616, 56250), (1800, 50500), (1818, 50000), (1875, 48480), (2000, 45450), (2020, 45000), (2250, 40400), (2400, 37875), (2424, 37500), (2500, 36360), (2525, 36000), (3000, 30300), (3030, 30000), (3125, 29088), (3232, 28125), (3600, 25250), (3636, 25000), (3750, 24240), (4000, 22725), (4040, 22500), (4500, 20200), (4545, 20000), (4848, 18750), (5000, 18180), (5050, 18000), (5625, 16160), (6000, 15150), (6060, 15000), (6250, 14544), (7200, 12625), (7272, 12500), (7500, 12120), (7575, 12000), (8080, 11250), (9000, 10100), (9090, 10000), (9375, 9696)]