19901050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1801}}^1$

素因数の和:1843

約数の個数: 48

約数和(自身を含む): 42231672

約数和(自身を除く): 22330622

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 170, 221, 325, 425, 442, 650, 850, 1105, 1801, 2210, 3602, 5525, 9005, 11050, 18010, 23413, 30617, 45025, 46826, 61234, 90050, 117065, 153085, 234130, 306170, 398021, 585325, 765425, 796042, 1170650, 1530850, 1990105, 3980210, 9950525, 19901050]

約数ペア:

[(1, 19901050), (2, 9950525), (5, 3980210), (10, 1990105), (13, 1530850), (17, 1170650), (25, 796042), (26, 765425), (34, 585325), (50, 398021), (65, 306170), (85, 234130), (130, 153085), (170, 117065), (221, 90050), (325, 61234), (425, 46826), (442, 45025), (650, 30617), (850, 23413), (1105, 18010), (1801, 11050), (2210, 9005), (3602, 5525)]