89781640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{172657}}^1$

素因数の和:172681

約数の個数: 32

約数和(自身を含む): 217549080

約数和(自身を除く): 127767440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 172657, 345314, 690628, 863285, 1381256, 1726570, 2244541, 3453140, 4489082, 6906280, 8978164, 11222705, 17956328, 22445410, 44890820, 89781640]

約数ペア:

[(1, 89781640), (2, 44890820), (4, 22445410), (5, 17956328), (8, 11222705), (10, 8978164), (13, 6906280), (20, 4489082), (26, 3453140), (40, 2244541), (52, 1726570), (65, 1381256), (104, 863285), (130, 690628), (260, 345314), (520, 172657)]