19131970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{787}}^1$

素因数の和:835

約数の個数: 64

約数和(自身を含む): 42892416

約数和(自身を除く): 23760446

約数列:

[1, 2, 5, 10, 11, 13, 17, 22, 26, 34, 55, 65, 85, 110, 130, 143, 170, 187, 221, 286, 374, 442, 715, 787, 935, 1105, 1430, 1574, 1870, 2210, 2431, 3935, 4862, 7870, 8657, 10231, 12155, 13379, 17314, 20462, 24310, 26758, 43285, 51155, 66895, 86570, 102310, 112541, 133790, 147169, 173927, 225082, 294338, 347854, 562705, 735845, 869635, 1125410, 1471690, 1739270, 1913197, 3826394, 9565985, 19131970]

約数ペア:

[(1, 19131970), (2, 9565985), (5, 3826394), (10, 1913197), (11, 1739270), (13, 1471690), (17, 1125410), (22, 869635), (26, 735845), (34, 562705), (55, 347854), (65, 294338), (85, 225082), (110, 173927), (130, 147169), (143, 133790), (170, 112541), (187, 102310), (221, 86570), (286, 66895), (374, 51155), (442, 43285), (715, 26758), (787, 24310), (935, 20462), (1105, 17314), (1430, 13379), (1574, 12155), (1870, 10231), (2210, 8657), (2431, 7870), (3935, 4862)]