18710965

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 30481920

約数和(自身を除く): 11770955

約数列:

[1, 5, 7, 13, 17, 35, 41, 59, 65, 85, 91, 119, 205, 221, 287, 295, 413, 455, 533, 595, 697, 767, 1003, 1105, 1435, 1547, 2065, 2419, 2665, 3485, 3731, 3835, 4879, 5015, 5369, 7021, 7735, 9061, 12095, 13039, 16933, 18655, 24395, 26845, 31447, 35105, 41123, 45305, 63427, 65195, 84665, 91273, 157235, 205615, 220129, 287861, 317135, 456365, 534599, 1100645, 1439305, 2672995, 3742193, 18710965]

約数ペア:

[(1, 18710965), (5, 3742193), (7, 2672995), (13, 1439305), (17, 1100645), (35, 534599), (41, 456365), (59, 317135), (65, 287861), (85, 220129), (91, 205615), (119, 157235), (205, 91273), (221, 84665), (287, 65195), (295, 63427), (413, 45305), (455, 41123), (533, 35105), (595, 31447), (697, 26845), (767, 24395), (1003, 18655), (1105, 16933), (1435, 13039), (1547, 12095), (2065, 9061), (2419, 7735), (2665, 7021), (3485, 5369), (3731, 5015), (3835, 4879)]