19977230

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{757}}^1$

素因数の和:813

約数の個数: 64

約数和(自身を含む): 45843840

約数和(自身を除く): 25866610

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 29, 35, 58, 65, 70, 91, 130, 145, 182, 203, 290, 377, 406, 455, 754, 757, 910, 1015, 1514, 1885, 2030, 2639, 3770, 3785, 5278, 5299, 7570, 9841, 10598, 13195, 19682, 21953, 26390, 26495, 43906, 49205, 52990, 68887, 98410, 109765, 137774, 153671, 219530, 285389, 307342, 344435, 570778, 688870, 768355, 1426945, 1536710, 1997723, 2853890, 3995446, 9988615, 19977230]

約数ペア:

[(1, 19977230), (2, 9988615), (5, 3995446), (7, 2853890), (10, 1997723), (13, 1536710), (14, 1426945), (26, 768355), (29, 688870), (35, 570778), (58, 344435), (65, 307342), (70, 285389), (91, 219530), (130, 153671), (145, 137774), (182, 109765), (203, 98410), (290, 68887), (377, 52990), (406, 49205), (455, 43906), (754, 26495), (757, 26390), (910, 21953), (1015, 19682), (1514, 13195), (1885, 10598), (2030, 9841), (2639, 7570), (3770, 5299), (3785, 5278)]