81692500

素因数分解:

$2^2\times 5^4\times {\mathrm{41}}^1\times {\mathrm{797}}^1$

素因数の和:862

約数の個数: 60

約数和(自身を含む): 183231972

約数和(自身を除く): 101539472

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 625, 797, 820, 1025, 1250, 1594, 2050, 2500, 3188, 3985, 4100, 5125, 7970, 10250, 15940, 19925, 20500, 25625, 32677, 39850, 51250, 65354, 79700, 99625, 102500, 130708, 163385, 199250, 326770, 398500, 498125, 653540, 816925, 996250, 1633850, 1992500, 3267700, 4084625, 8169250, 16338500, 20423125, 40846250, 81692500]

約数ペア:

[(1, 81692500), (2, 40846250), (4, 20423125), (5, 16338500), (10, 8169250), (20, 4084625), (25, 3267700), (41, 1992500), (50, 1633850), (82, 996250), (100, 816925), (125, 653540), (164, 498125), (205, 398500), (250, 326770), (410, 199250), (500, 163385), (625, 130708), (797, 102500), (820, 99625), (1025, 79700), (1250, 65354), (1594, 51250), (2050, 39850), (2500, 32677), (3188, 25625), (3985, 20500), (4100, 19925), (5125, 15940), (7970, 10250)]