13211960

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 31190400

約数和(自身を除く): 17978440

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 79, 113, 148, 158, 185, 226, 296, 316, 370, 395, 452, 565, 632, 740, 790, 904, 1130, 1480, 1580, 2260, 2923, 3160, 4181, 4520, 5846, 8362, 8927, 11692, 14615, 16724, 17854, 20905, 23384, 29230, 33448, 35708, 41810, 44635, 58460, 71416, 83620, 89270, 116920, 167240, 178540, 330299, 357080, 660598, 1321196, 1651495, 2642392, 3302990, 6605980, 13211960]

約数ペア:

[(1, 13211960), (2, 6605980), (4, 3302990), (5, 2642392), (8, 1651495), (10, 1321196), (20, 660598), (37, 357080), (40, 330299), (74, 178540), (79, 167240), (113, 116920), (148, 89270), (158, 83620), (185, 71416), (226, 58460), (296, 44635), (316, 41810), (370, 35708), (395, 33448), (452, 29230), (565, 23384), (632, 20905), (740, 17854), (790, 16724), (904, 14615), (1130, 11692), (1480, 8927), (1580, 8362), (2260, 5846), (2923, 4520), (3160, 4181)]