9978800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1$

素因数の和:151

約数の個数: 120

約数和(自身を含む): 27446160

約数和(自身を除く): 17467360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 38, 40, 50, 52, 65, 76, 80, 95, 100, 101, 104, 130, 152, 190, 200, 202, 208, 247, 260, 304, 325, 380, 400, 404, 475, 494, 505, 520, 650, 760, 808, 950, 988, 1010, 1040, 1235, 1300, 1313, 1520, 1616, 1900, 1919, 1976, 2020, 2470, 2525, 2600, 2626, 3800, 3838, 3952, 4040, 4940, 5050, 5200, 5252, 6175, 6565, 7600, 7676, 8080, 9595, 9880, 10100, 10504, 12350, 13130, 15352, 19190, 19760, 20200, 21008, 24700, 24947, 26260, 30704, 32825, 38380, 40400, 47975, 49400, 49894, 52520, 65650, 76760, 95950, 98800, 99788, 105040, 124735, 131300, 153520, 191900, 199576, 249470, 262600, 383800, 399152, 498940, 525200, 623675, 767600, 997880, 1247350, 1995760, 2494700, 4989400, 9978800]

約数ペア:

[(1, 9978800), (2, 4989400), (4, 2494700), (5, 1995760), (8, 1247350), (10, 997880), (13, 767600), (16, 623675), (19, 525200), (20, 498940), (25, 399152), (26, 383800), (38, 262600), (40, 249470), (50, 199576), (52, 191900), (65, 153520), (76, 131300), (80, 124735), (95, 105040), (100, 99788), (101, 98800), (104, 95950), (130, 76760), (152, 65650), (190, 52520), (200, 49894), (202, 49400), (208, 47975), (247, 40400), (260, 38380), (304, 32825), (325, 30704), (380, 26260), (400, 24947), (404, 24700), (475, 21008), (494, 20200), (505, 19760), (520, 19190), (650, 15352), (760, 13130), (808, 12350), (950, 10504), (988, 10100), (1010, 9880), (1040, 9595), (1235, 8080), (1300, 7676), (1313, 7600), (1520, 6565), (1616, 6175), (1900, 5252), (1919, 5200), (1976, 5050), (2020, 4940), (2470, 4040), (2525, 3952), (2600, 3838), (2626, 3800)]