90420440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2309}}^1$

素因数の和:2420

約数の個数: 64

約数和(自身を含む): 224532000

約数和(自身を除く): 134111560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 440, 445, 712, 890, 979, 1780, 1958, 2309, 3560, 3916, 4618, 4895, 7832, 9236, 9790, 11545, 18472, 19580, 23090, 25399, 39160, 46180, 50798, 92360, 101596, 126995, 203192, 205501, 253990, 411002, 507980, 822004, 1015960, 1027505, 1644008, 2055010, 2260511, 4110020, 4521022, 8220040, 9042044, 11302555, 18084088, 22605110, 45210220, 90420440]

約数ペア:

[(1, 90420440), (2, 45210220), (4, 22605110), (5, 18084088), (8, 11302555), (10, 9042044), (11, 8220040), (20, 4521022), (22, 4110020), (40, 2260511), (44, 2055010), (55, 1644008), (88, 1027505), (89, 1015960), (110, 822004), (178, 507980), (220, 411002), (356, 253990), (440, 205501), (445, 203192), (712, 126995), (890, 101596), (979, 92360), (1780, 50798), (1958, 46180), (2309, 39160), (3560, 25399), (3916, 23090), (4618, 19580), (4895, 18472), (7832, 11545), (9236, 9790)]