15998500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{653}}^1$

素因数の和:686

約数の個数: 72

約数和(自身を含む): 40707576

約数和(自身を除く): 24709076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 125, 140, 175, 196, 245, 250, 350, 490, 500, 653, 700, 875, 980, 1225, 1306, 1750, 2450, 2612, 3265, 3500, 4571, 4900, 6125, 6530, 9142, 12250, 13060, 16325, 18284, 22855, 24500, 31997, 32650, 45710, 63994, 65300, 81625, 91420, 114275, 127988, 159985, 163250, 228550, 319970, 326500, 457100, 571375, 639940, 799925, 1142750, 1599850, 2285500, 3199700, 3999625, 7999250, 15998500]

約数ペア:

[(1, 15998500), (2, 7999250), (4, 3999625), (5, 3199700), (7, 2285500), (10, 1599850), (14, 1142750), (20, 799925), (25, 639940), (28, 571375), (35, 457100), (49, 326500), (50, 319970), (70, 228550), (98, 163250), (100, 159985), (125, 127988), (140, 114275), (175, 91420), (196, 81625), (245, 65300), (250, 63994), (350, 45710), (490, 32650), (500, 31997), (653, 24500), (700, 22855), (875, 18284), (980, 16325), (1225, 13060), (1306, 12250), (1750, 9142), (2450, 6530), (2612, 6125), (3265, 4900), (3500, 4571)]