39995000

素因数分解:

$2^3\times 5^4\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:466

約数の個数: 80

約数和(自身を含む): 98874600

約数和(自身を除く): 58879600

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 152, 190, 200, 250, 380, 421, 475, 500, 625, 760, 842, 950, 1000, 1250, 1684, 1900, 2105, 2375, 2500, 3368, 3800, 4210, 4750, 5000, 7999, 8420, 9500, 10525, 11875, 15998, 16840, 19000, 21050, 23750, 31996, 39995, 42100, 47500, 52625, 63992, 79990, 84200, 95000, 105250, 159980, 199975, 210500, 263125, 319960, 399950, 421000, 526250, 799900, 999875, 1052500, 1599800, 1999750, 2105000, 3999500, 4999375, 7999000, 9998750, 19997500, 39995000]

約数ペア:

[(1, 39995000), (2, 19997500), (4, 9998750), (5, 7999000), (8, 4999375), (10, 3999500), (19, 2105000), (20, 1999750), (25, 1599800), (38, 1052500), (40, 999875), (50, 799900), (76, 526250), (95, 421000), (100, 399950), (125, 319960), (152, 263125), (190, 210500), (200, 199975), (250, 159980), (380, 105250), (421, 95000), (475, 84200), (500, 79990), (625, 63992), (760, 52625), (842, 47500), (950, 42100), (1000, 39995), (1250, 31996), (1684, 23750), (1900, 21050), (2105, 19000), (2375, 16840), (2500, 15998), (3368, 11875), (3800, 10525), (4210, 9500), (4750, 8420), (5000, 7999)]