18640648

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1187}}^1$

素因数の和:1357

約数の個数: 32

約数和(自身を含む): 37920960

約数和(自身を除く): 19280312

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 151, 302, 604, 1187, 1208, 1963, 2374, 3926, 4748, 7852, 9496, 15431, 15704, 30862, 61724, 123448, 179237, 358474, 716948, 1433896, 2330081, 4660162, 9320324, 18640648]

約数ペア:

[(1, 18640648), (2, 9320324), (4, 4660162), (8, 2330081), (13, 1433896), (26, 716948), (52, 358474), (104, 179237), (151, 123448), (302, 61724), (604, 30862), (1187, 15704), (1208, 15431), (1963, 9496), (2374, 7852), (3926, 4748)]