20022760

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 47854800

約数和(自身を除く): 27832040

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 41, 58, 82, 116, 145, 164, 205, 232, 290, 328, 410, 421, 580, 820, 842, 1160, 1189, 1640, 1684, 2105, 2378, 3368, 4210, 4756, 5945, 8420, 9512, 11890, 12209, 16840, 17261, 23780, 24418, 34522, 47560, 48836, 61045, 69044, 86305, 97672, 122090, 138088, 172610, 244180, 345220, 488360, 500569, 690440, 1001138, 2002276, 2502845, 4004552, 5005690, 10011380, 20022760]

約数ペア:

[(1, 20022760), (2, 10011380), (4, 5005690), (5, 4004552), (8, 2502845), (10, 2002276), (20, 1001138), (29, 690440), (40, 500569), (41, 488360), (58, 345220), (82, 244180), (116, 172610), (145, 138088), (164, 122090), (205, 97672), (232, 86305), (290, 69044), (328, 61045), (410, 48836), (421, 47560), (580, 34522), (820, 24418), (842, 23780), (1160, 17261), (1189, 16840), (1640, 12209), (1684, 11890), (2105, 9512), (2378, 8420), (3368, 5945), (4210, 4756)]