42100000

素因数分解:

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

素因数の和:456

約数の個数: 72

約数和(自身を含む): 103844916

約数和(自身を除く): 61744916

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 421, 500, 625, 800, 842, 1000, 1250, 1684, 2000, 2105, 2500, 3125, 3368, 4000, 4210, 5000, 6250, 6736, 8420, 10000, 10525, 12500, 13472, 16840, 20000, 21050, 25000, 33680, 42100, 50000, 52625, 67360, 84200, 100000, 105250, 168400, 210500, 263125, 336800, 421000, 526250, 842000, 1052500, 1315625, 1684000, 2105000, 2631250, 4210000, 5262500, 8420000, 10525000, 21050000, 42100000]

約数ペア:

[(1, 42100000), (2, 21050000), (4, 10525000), (5, 8420000), (8, 5262500), (10, 4210000), (16, 2631250), (20, 2105000), (25, 1684000), (32, 1315625), (40, 1052500), (50, 842000), (80, 526250), (100, 421000), (125, 336800), (160, 263125), (200, 210500), (250, 168400), (400, 105250), (421, 100000), (500, 84200), (625, 67360), (800, 52625), (842, 50000), (1000, 42100), (1250, 33680), (1684, 25000), (2000, 21050), (2105, 20000), (2500, 16840), (3125, 13472), (3368, 12500), (4000, 10525), (4210, 10000), (5000, 8420), (6250, 6736)]