21303380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{8951}}^1$

素因数の和:8984

約数の個数: 48

約数和(自身を含む): 54141696

約数和(自身を除く): 32838316

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 8951, 17902, 35804, 44755, 62657, 89510, 125314, 152167, 179020, 250628, 304334, 313285, 608668, 626570, 760835, 1065169, 1253140, 1521670, 2130338, 3043340, 4260676, 5325845, 10651690, 21303380]

約数ペア:

[(1, 21303380), (2, 10651690), (4, 5325845), (5, 4260676), (7, 3043340), (10, 2130338), (14, 1521670), (17, 1253140), (20, 1065169), (28, 760835), (34, 626570), (35, 608668), (68, 313285), (70, 304334), (85, 250628), (119, 179020), (140, 152167), (170, 125314), (238, 89510), (340, 62657), (476, 44755), (595, 35804), (1190, 17902), (2380, 8951)]