21556496

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2801}}^1$

素因数の和:2859

約数の個数: 40

約数和(自身を含む): 46210584

約数和(自身を除く): 24654088

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 104, 148, 208, 296, 481, 592, 962, 1924, 2801, 3848, 5602, 7696, 11204, 22408, 36413, 44816, 72826, 103637, 145652, 207274, 291304, 414548, 582608, 829096, 1347281, 1658192, 2694562, 5389124, 10778248, 21556496]

約数ペア:

[(1, 21556496), (2, 10778248), (4, 5389124), (8, 2694562), (13, 1658192), (16, 1347281), (26, 829096), (37, 582608), (52, 414548), (74, 291304), (104, 207274), (148, 145652), (208, 103637), (296, 72826), (481, 44816), (592, 36413), (962, 22408), (1924, 11204), (2801, 7696), (3848, 5602)]