21458890

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{983}}^1$

素因数の和:1086

約数の個数: 32

約数和(自身を含む): 40383360

約数和(自身を除く): 18924470

約数列:

[1, 2, 5, 10, 37, 59, 74, 118, 185, 295, 370, 590, 983, 1966, 2183, 4366, 4915, 9830, 10915, 21830, 36371, 57997, 72742, 115994, 181855, 289985, 363710, 579970, 2145889, 4291778, 10729445, 21458890]

約数ペア:

[(1, 21458890), (2, 10729445), (5, 4291778), (10, 2145889), (37, 579970), (59, 363710), (74, 289985), (118, 181855), (185, 115994), (295, 72742), (370, 57997), (590, 36371), (983, 21830), (1966, 10915), (2183, 9830), (4366, 4915)]