68412500

素因数分解:

$2^2\times 5^5\times {\mathrm{13}}^1\times {\mathrm{421}}^1$

素因数の和:463

約数の個数: 72

約数和(自身を含む): 161536536

約数和(自身を除く): 93124036

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 421, 500, 625, 650, 842, 1250, 1300, 1625, 1684, 2105, 2500, 3125, 3250, 4210, 5473, 6250, 6500, 8125, 8420, 10525, 10946, 12500, 16250, 21050, 21892, 27365, 32500, 40625, 42100, 52625, 54730, 81250, 105250, 109460, 136825, 162500, 210500, 263125, 273650, 526250, 547300, 684125, 1052500, 1315625, 1368250, 2631250, 2736500, 3420625, 5262500, 6841250, 13682500, 17103125, 34206250, 68412500]

約数ペア:

[(1, 68412500), (2, 34206250), (4, 17103125), (5, 13682500), (10, 6841250), (13, 5262500), (20, 3420625), (25, 2736500), (26, 2631250), (50, 1368250), (52, 1315625), (65, 1052500), (100, 684125), (125, 547300), (130, 526250), (250, 273650), (260, 263125), (325, 210500), (421, 162500), (500, 136825), (625, 109460), (650, 105250), (842, 81250), (1250, 54730), (1300, 52625), (1625, 42100), (1684, 40625), (2105, 32500), (2500, 27365), (3125, 21892), (3250, 21050), (4210, 16250), (5473, 12500), (6250, 10946), (6500, 10525), (8125, 8420)]