21337160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1109}}^1$

素因数の和:1170

約数の個数: 64

約数和(自身を含む): 53146800

約数和(自身を除く): 31809640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 740, 962, 1109, 1480, 1924, 2218, 2405, 3848, 4436, 4810, 5545, 8872, 9620, 11090, 14417, 19240, 22180, 28834, 41033, 44360, 57668, 72085, 82066, 115336, 144170, 164132, 205165, 288340, 328264, 410330, 533429, 576680, 820660, 1066858, 1641320, 2133716, 2667145, 4267432, 5334290, 10668580, 21337160]

約数ペア:

[(1, 21337160), (2, 10668580), (4, 5334290), (5, 4267432), (8, 2667145), (10, 2133716), (13, 1641320), (20, 1066858), (26, 820660), (37, 576680), (40, 533429), (52, 410330), (65, 328264), (74, 288340), (104, 205165), (130, 164132), (148, 144170), (185, 115336), (260, 82066), (296, 72085), (370, 57668), (481, 44360), (520, 41033), (740, 28834), (962, 22180), (1109, 19240), (1480, 14417), (1924, 11090), (2218, 9620), (2405, 8872), (3848, 5545), (4436, 4810)]