18783518

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{317}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 31733856

約数和(自身を除く): 12950338

約数列:

[1, 2, 13, 26, 43, 53, 86, 106, 317, 559, 634, 689, 1118, 1378, 2279, 4121, 4558, 8242, 13631, 16801, 27262, 29627, 33602, 59254, 177203, 218413, 354406, 436826, 722443, 1444886, 9391759, 18783518]

約数ペア:

[(1, 18783518), (2, 9391759), (13, 1444886), (26, 722443), (43, 436826), (53, 354406), (86, 218413), (106, 177203), (317, 59254), (559, 33602), (634, 29627), (689, 27262), (1118, 16801), (1378, 13631), (2279, 8242), (4121, 4558)]