21531450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{79}}^2$

素因数の和:196

約数の個数: 72

約数和(自身を含む): 56433888

約数和(自身を除く): 34902438

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 25, 30, 46, 50, 69, 75, 79, 115, 138, 150, 158, 230, 237, 345, 395, 474, 575, 690, 790, 1150, 1185, 1725, 1817, 1975, 2370, 3450, 3634, 3950, 5451, 5925, 6241, 9085, 10902, 11850, 12482, 18170, 18723, 27255, 31205, 37446, 45425, 54510, 62410, 90850, 93615, 136275, 143543, 156025, 187230, 272550, 287086, 312050, 430629, 468075, 717715, 861258, 936150, 1435430, 2153145, 3588575, 4306290, 7177150, 10765725, 21531450]

約数ペア:

[(1, 21531450), (2, 10765725), (3, 7177150), (5, 4306290), (6, 3588575), (10, 2153145), (15, 1435430), (23, 936150), (25, 861258), (30, 717715), (46, 468075), (50, 430629), (69, 312050), (75, 287086), (79, 272550), (115, 187230), (138, 156025), (150, 143543), (158, 136275), (230, 93615), (237, 90850), (345, 62410), (395, 54510), (474, 45425), (575, 37446), (690, 31205), (790, 27255), (1150, 18723), (1185, 18170), (1725, 12482), (1817, 11850), (1975, 10902), (2370, 9085), (3450, 6241), (3634, 5925), (3950, 5451)]