28748780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{521}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 63141120

約数和(自身を除く): 34392340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 521, 620, 890, 1042, 1780, 2084, 2605, 2759, 5210, 5518, 10420, 11036, 13795, 16151, 27590, 32302, 46369, 55180, 64604, 80755, 92738, 161510, 185476, 231845, 323020, 463690, 927380, 1437439, 2874878, 5749756, 7187195, 14374390, 28748780]

約数ペア:

[(1, 28748780), (2, 14374390), (4, 7187195), (5, 5749756), (10, 2874878), (20, 1437439), (31, 927380), (62, 463690), (89, 323020), (124, 231845), (155, 185476), (178, 161510), (310, 92738), (356, 80755), (445, 64604), (521, 55180), (620, 46369), (890, 32302), (1042, 27590), (1780, 16151), (2084, 13795), (2605, 11036), (2759, 10420), (5210, 5518)]