388465870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{69493}}^1$

素因数の和:69556

約数の個数: 32

約数和(自身を含む): 770549472

約数和(自身を除く): 382083602

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 5590, 69493, 138986, 347465, 694930, 903409, 1806818, 2988199, 4517045, 5976398, 9034090, 14940995, 29881990, 38846587, 77693174, 194232935, 388465870]

約数ペア:

[(1, 388465870), (2, 194232935), (5, 77693174), (10, 38846587), (13, 29881990), (26, 14940995), (43, 9034090), (65, 5976398), (86, 4517045), (130, 2988199), (215, 1806818), (430, 903409), (559, 694930), (1118, 347465), (2795, 138986), (5590, 69493)]