21276430

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1$

素因数の和:313

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 25172210

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 47, 58, 70, 94, 145, 203, 223, 235, 290, 329, 406, 446, 470, 658, 1015, 1115, 1363, 1561, 1645, 2030, 2230, 2726, 3122, 3290, 6467, 6815, 7805, 9541, 10481, 12934, 13630, 15610, 19082, 20962, 32335, 45269, 47705, 52405, 64670, 73367, 90538, 95410, 104810, 146734, 226345, 303949, 366835, 452690, 607898, 733670, 1519745, 2127643, 3039490, 4255286, 10638215, 21276430]

約数ペア:

[(1, 21276430), (2, 10638215), (5, 4255286), (7, 3039490), (10, 2127643), (14, 1519745), (29, 733670), (35, 607898), (47, 452690), (58, 366835), (70, 303949), (94, 226345), (145, 146734), (203, 104810), (223, 95410), (235, 90538), (290, 73367), (329, 64670), (406, 52405), (446, 47705), (470, 45269), (658, 32335), (1015, 20962), (1115, 19082), (1363, 15610), (1561, 13630), (1645, 12934), (2030, 10481), (2230, 9541), (2726, 7805), (3122, 6815), (3290, 6467)]