18481870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:313

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 20916530

約数列:

[1, 2, 5, 10, 11, 19, 22, 37, 38, 55, 74, 95, 110, 185, 190, 209, 239, 370, 407, 418, 478, 703, 814, 1045, 1195, 1406, 2035, 2090, 2390, 2629, 3515, 4070, 4541, 5258, 7030, 7733, 8843, 9082, 13145, 15466, 17686, 22705, 26290, 38665, 44215, 45410, 49951, 77330, 88430, 97273, 99902, 168017, 194546, 249755, 336034, 486365, 499510, 840085, 972730, 1680170, 1848187, 3696374, 9240935, 18481870]

約数ペア:

[(1, 18481870), (2, 9240935), (5, 3696374), (10, 1848187), (11, 1680170), (19, 972730), (22, 840085), (37, 499510), (38, 486365), (55, 336034), (74, 249755), (95, 194546), (110, 168017), (185, 99902), (190, 97273), (209, 88430), (239, 77330), (370, 49951), (407, 45410), (418, 44215), (478, 38665), (703, 26290), (814, 22705), (1045, 17686), (1195, 15466), (1406, 13145), (2035, 9082), (2090, 8843), (2390, 7733), (2629, 7030), (3515, 5258), (4070, 4541)]