890397760

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{20921}}^1$

素因数の和:20964

約数の個数: 112

約数和(自身を含む): 2550810240

約数和(自身を除く): 1660412480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 224, 266, 280, 304, 320, 380, 448, 532, 560, 608, 665, 760, 1064, 1120, 1216, 1330, 1520, 2128, 2240, 2660, 3040, 4256, 5320, 6080, 8512, 10640, 20921, 21280, 41842, 42560, 83684, 104605, 146447, 167368, 209210, 292894, 334736, 397499, 418420, 585788, 669472, 732235, 794998, 836840, 1171576, 1338944, 1464470, 1589996, 1673680, 1987495, 2343152, 2782493, 2928940, 3179992, 3347360, 3974990, 4686304, 5564986, 5857880, 6359984, 6694720, 7949980, 9372608, 11129972, 11715760, 12719968, 13912465, 15899960, 22259944, 23431520, 25439936, 27824930, 31799920, 44519888, 46863040, 55649860, 63599840, 89039776, 111299720, 127199680, 178079552, 222599440, 445198880, 890397760]

約数ペア:

[(1, 890397760), (2, 445198880), (4, 222599440), (5, 178079552), (7, 127199680), (8, 111299720), (10, 89039776), (14, 63599840), (16, 55649860), (19, 46863040), (20, 44519888), (28, 31799920), (32, 27824930), (35, 25439936), (38, 23431520), (40, 22259944), (56, 15899960), (64, 13912465), (70, 12719968), (76, 11715760), (80, 11129972), (95, 9372608), (112, 7949980), (133, 6694720), (140, 6359984), (152, 5857880), (160, 5564986), (190, 4686304), (224, 3974990), (266, 3347360), (280, 3179992), (304, 2928940), (320, 2782493), (380, 2343152), (448, 1987495), (532, 1673680), (560, 1589996), (608, 1464470), (665, 1338944), (760, 1171576), (1064, 836840), (1120, 794998), (1216, 732235), (1330, 669472), (1520, 585788), (2128, 418420), (2240, 397499), (2660, 334736), (3040, 292894), (4256, 209210), (5320, 167368), (6080, 146447), (8512, 104605), (10640, 83684), (20921, 42560), (21280, 41842)]