18018890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{499}}^1$

素因数の和:686

約数の個数: 32

約数和(自身を含む): 34128000

約数和(自身を除く): 16109110

約数列:

[1, 2, 5, 10, 23, 46, 115, 157, 230, 314, 499, 785, 998, 1570, 2495, 3611, 4990, 7222, 11477, 18055, 22954, 36110, 57385, 78343, 114770, 156686, 391715, 783430, 1801889, 3603778, 9009445, 18018890]

約数ペア:

[(1, 18018890), (2, 9009445), (5, 3603778), (10, 1801889), (23, 783430), (46, 391715), (115, 156686), (157, 114770), (230, 78343), (314, 57385), (499, 36110), (785, 22954), (998, 18055), (1570, 11477), (2495, 7222), (3611, 4990)]