19980857572

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{547}}^1\times {\mathrm{719}}^1\times {\mathrm{977}}^1$

素因数の和:2260

約数の個数: 48

約数和(自身を含む): 37816208640

約数和(自身を除く): 17835351068

約数列:

[1, 2, 4, 13, 26, 52, 547, 719, 977, 1094, 1438, 1954, 2188, 2876, 3908, 7111, 9347, 12701, 14222, 18694, 25402, 28444, 37388, 50804, 393293, 534419, 702463, 786586, 1068838, 1404926, 1573172, 2137676, 2809852, 5112809, 6947447, 9132019, 10225618, 13894894, 18264038, 20451236, 27789788, 36528076, 384247261, 768494522, 1536989044, 4995214393, 9990428786, 19980857572]

約数ペア:

[(1, 19980857572), (2, 9990428786), (4, 4995214393), (13, 1536989044), (26, 768494522), (52, 384247261), (547, 36528076), (719, 27789788), (977, 20451236), (1094, 18264038), (1438, 13894894), (1954, 10225618), (2188, 9132019), (2876, 6947447), (3908, 5112809), (7111, 2809852), (9347, 2137676), (12701, 1573172), (14222, 1404926), (18694, 1068838), (25402, 786586), (28444, 702463), (37388, 534419), (50804, 393293)]