21864440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2213}}^1$

素因数の和:2256

約数の個数: 64

約数和(自身を含む): 55792800

約数和(自身を除く): 33928360

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2213, 2470, 4426, 4940, 8852, 9880, 11065, 17704, 22130, 28769, 42047, 44260, 57538, 84094, 88520, 115076, 143845, 168188, 210235, 230152, 287690, 336376, 420470, 546611, 575380, 840940, 1093222, 1150760, 1681880, 2186444, 2733055, 4372888, 5466110, 10932220, 21864440]

約数ペア:

[(1, 21864440), (2, 10932220), (4, 5466110), (5, 4372888), (8, 2733055), (10, 2186444), (13, 1681880), (19, 1150760), (20, 1093222), (26, 840940), (38, 575380), (40, 546611), (52, 420470), (65, 336376), (76, 287690), (95, 230152), (104, 210235), (130, 168188), (152, 143845), (190, 115076), (247, 88520), (260, 84094), (380, 57538), (494, 44260), (520, 42047), (760, 28769), (988, 22130), (1235, 17704), (1976, 11065), (2213, 9880), (2470, 8852), (4426, 4940)]