20896600

素因数分解:

$2^3\times 5^2\times {\mathrm{163}}^1\times {\mathrm{641}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 48958920

約数和(自身を除く): 28062320

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 163, 200, 326, 641, 652, 815, 1282, 1304, 1630, 2564, 3205, 3260, 4075, 5128, 6410, 6520, 8150, 12820, 16025, 16300, 25640, 32050, 32600, 64100, 104483, 128200, 208966, 417932, 522415, 835864, 1044830, 2089660, 2612075, 4179320, 5224150, 10448300, 20896600]

約数ペア:

[(1, 20896600), (2, 10448300), (4, 5224150), (5, 4179320), (8, 2612075), (10, 2089660), (20, 1044830), (25, 835864), (40, 522415), (50, 417932), (100, 208966), (163, 128200), (200, 104483), (326, 64100), (641, 32600), (652, 32050), (815, 25640), (1282, 16300), (1304, 16025), (1630, 12820), (2564, 8150), (3205, 6520), (3260, 6410), (4075, 5128)]