19487260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{311}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 44396352

約数和(自身を除く): 24909092

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 241, 260, 311, 482, 622, 964, 1205, 1244, 1555, 2410, 3110, 3133, 4043, 4820, 6220, 6266, 8086, 12532, 15665, 16172, 20215, 31330, 40430, 62660, 74951, 80860, 149902, 299804, 374755, 749510, 974363, 1499020, 1948726, 3897452, 4871815, 9743630, 19487260]

約数ペア:

[(1, 19487260), (2, 9743630), (4, 4871815), (5, 3897452), (10, 1948726), (13, 1499020), (20, 974363), (26, 749510), (52, 374755), (65, 299804), (130, 149902), (241, 80860), (260, 74951), (311, 62660), (482, 40430), (622, 31330), (964, 20215), (1205, 16172), (1244, 15665), (1555, 12532), (2410, 8086), (3110, 6266), (3133, 6220), (4043, 4820)]