19443665

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 26210304

約数和(自身を除く): 6766639

約数列:

[1, 5, 17, 31, 47, 85, 155, 157, 235, 527, 785, 799, 1457, 2635, 2669, 3995, 4867, 7285, 7379, 13345, 24335, 24769, 36895, 82739, 123845, 125443, 228749, 413695, 627215, 1143745, 3888733, 19443665]

約数ペア:

[(1, 19443665), (5, 3888733), (17, 1143745), (31, 627215), (47, 413695), (85, 228749), (155, 125443), (157, 123845), (235, 82739), (527, 36895), (785, 24769), (799, 24335), (1457, 13345), (2635, 7379), (2669, 7285), (3995, 4867)]