90500000

素因数分解:

$2^5\times 5^6\times {\mathrm{181}}^1$

素因数の和:221

約数の個数: 84

約数和(自身を含む): 223942446

約数和(自身を除く): 133442446

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 181, 200, 250, 362, 400, 500, 625, 724, 800, 905, 1000, 1250, 1448, 1810, 2000, 2500, 2896, 3125, 3620, 4000, 4525, 5000, 5792, 6250, 7240, 9050, 10000, 12500, 14480, 15625, 18100, 20000, 22625, 25000, 28960, 31250, 36200, 45250, 50000, 62500, 72400, 90500, 100000, 113125, 125000, 144800, 181000, 226250, 250000, 362000, 452500, 500000, 565625, 724000, 905000, 1131250, 1810000, 2262500, 2828125, 3620000, 4525000, 5656250, 9050000, 11312500, 18100000, 22625000, 45250000, 90500000]

約数ペア:

[(1, 90500000), (2, 45250000), (4, 22625000), (5, 18100000), (8, 11312500), (10, 9050000), (16, 5656250), (20, 4525000), (25, 3620000), (32, 2828125), (40, 2262500), (50, 1810000), (80, 1131250), (100, 905000), (125, 724000), (160, 565625), (181, 500000), (200, 452500), (250, 362000), (362, 250000), (400, 226250), (500, 181000), (625, 144800), (724, 125000), (800, 113125), (905, 100000), (1000, 90500), (1250, 72400), (1448, 62500), (1810, 50000), (2000, 45250), (2500, 36200), (2896, 31250), (3125, 28960), (3620, 25000), (4000, 22625), (4525, 20000), (5000, 18100), (5792, 15625), (6250, 14480), (7240, 12500), (9050, 10000)]