21997800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{101}}^1$

素因数の和:145

約数の個数: 216

約数和(自身を含む): 82006470

約数和(自身を除く): 60008670

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 25, 30, 33, 36, 40, 44, 45, 50, 55, 60, 66, 72, 75, 88, 90, 99, 100, 101, 110, 120, 121, 132, 150, 165, 180, 198, 200, 202, 220, 225, 242, 264, 275, 300, 303, 330, 360, 363, 396, 404, 440, 450, 484, 495, 505, 550, 600, 605, 606, 660, 726, 792, 808, 825, 900, 909, 968, 990, 1010, 1089, 1100, 1111, 1210, 1212, 1320, 1452, 1515, 1650, 1800, 1815, 1818, 1980, 2020, 2178, 2200, 2222, 2420, 2424, 2475, 2525, 2904, 3025, 3030, 3300, 3333, 3630, 3636, 3960, 4040, 4356, 4444, 4545, 4840, 4950, 5050, 5445, 5555, 6050, 6060, 6600, 6666, 7260, 7272, 7575, 8712, 8888, 9075, 9090, 9900, 9999, 10100, 10890, 11110, 12100, 12120, 12221, 13332, 14520, 15150, 16665, 18150, 18180, 19800, 19998, 20200, 21780, 22220, 22725, 24200, 24442, 26664, 27225, 27775, 30300, 33330, 36300, 36360, 36663, 39996, 43560, 44440, 45450, 48884, 49995, 54450, 55550, 60600, 61105, 66660, 72600, 73326, 79992, 83325, 90900, 97768, 99990, 108900, 109989, 111100, 122210, 133320, 146652, 166650, 181800, 183315, 199980, 217800, 219978, 222200, 244420, 249975, 293304, 305525, 333300, 366630, 399960, 439956, 488840, 499950, 549945, 611050, 666600, 733260, 879912, 916575, 999900, 1099890, 1222100, 1466520, 1833150, 1999800, 2199780, 2444200, 2749725, 3666300, 4399560, 5499450, 7332600, 10998900, 21997800]

約数ペア:

[(1, 21997800), (2, 10998900), (3, 7332600), (4, 5499450), (5, 4399560), (6, 3666300), (8, 2749725), (9, 2444200), (10, 2199780), (11, 1999800), (12, 1833150), (15, 1466520), (18, 1222100), (20, 1099890), (22, 999900), (24, 916575), (25, 879912), (30, 733260), (33, 666600), (36, 611050), (40, 549945), (44, 499950), (45, 488840), (50, 439956), (55, 399960), (60, 366630), (66, 333300), (72, 305525), (75, 293304), (88, 249975), (90, 244420), (99, 222200), (100, 219978), (101, 217800), (110, 199980), (120, 183315), (121, 181800), (132, 166650), (150, 146652), (165, 133320), (180, 122210), (198, 111100), (200, 109989), (202, 108900), (220, 99990), (225, 97768), (242, 90900), (264, 83325), (275, 79992), (300, 73326), (303, 72600), (330, 66660), (360, 61105), (363, 60600), (396, 55550), (404, 54450), (440, 49995), (450, 48884), (484, 45450), (495, 44440), (505, 43560), (550, 39996), (600, 36663), (605, 36360), (606, 36300), (660, 33330), (726, 30300), (792, 27775), (808, 27225), (825, 26664), (900, 24442), (909, 24200), (968, 22725), (990, 22220), (1010, 21780), (1089, 20200), (1100, 19998), (1111, 19800), (1210, 18180), (1212, 18150), (1320, 16665), (1452, 15150), (1515, 14520), (1650, 13332), (1800, 12221), (1815, 12120), (1818, 12100), (1980, 11110), (2020, 10890), (2178, 10100), (2200, 9999), (2222, 9900), (2420, 9090), (2424, 9075), (2475, 8888), (2525, 8712), (2904, 7575), (3025, 7272), (3030, 7260), (3300, 6666), (3333, 6600), (3630, 6060), (3636, 6050), (3960, 5555), (4040, 5445), (4356, 5050), (4444, 4950), (4545, 4840)]