19180816

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{38671}}^1$

素因数の和:38710

約数の個数: 20

約数和(自身を含む): 38362624

約数和(自身を除く): 19181808

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 38671, 77342, 154684, 309368, 618736, 1198801, 2397602, 4795204, 9590408, 19180816]

約数ペア:

[(1, 19180816), (2, 9590408), (4, 4795204), (8, 2397602), (16, 1198801), (31, 618736), (62, 309368), (124, 154684), (248, 77342), (496, 38671)]