81781000

素因数分解:

$2^3\times 5^3\times 7^2\times {\mathrm{1669}}^1$

素因数の和:1704

約数の個数: 96

約数和(自身を含む): 222744600

約数和(自身を除く): 140963600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 125, 140, 175, 196, 200, 245, 250, 280, 350, 392, 490, 500, 700, 875, 980, 1000, 1225, 1400, 1669, 1750, 1960, 2450, 3338, 3500, 4900, 6125, 6676, 7000, 8345, 9800, 11683, 12250, 13352, 16690, 23366, 24500, 33380, 41725, 46732, 49000, 58415, 66760, 81781, 83450, 93464, 116830, 163562, 166900, 208625, 233660, 292075, 327124, 333800, 408905, 417250, 467320, 584150, 654248, 817810, 834500, 1168300, 1460375, 1635620, 1669000, 2044525, 2336600, 2920750, 3271240, 4089050, 5841500, 8178100, 10222625, 11683000, 16356200, 20445250, 40890500, 81781000]

約数ペア:

[(1, 81781000), (2, 40890500), (4, 20445250), (5, 16356200), (7, 11683000), (8, 10222625), (10, 8178100), (14, 5841500), (20, 4089050), (25, 3271240), (28, 2920750), (35, 2336600), (40, 2044525), (49, 1669000), (50, 1635620), (56, 1460375), (70, 1168300), (98, 834500), (100, 817810), (125, 654248), (140, 584150), (175, 467320), (196, 417250), (200, 408905), (245, 333800), (250, 327124), (280, 292075), (350, 233660), (392, 208625), (490, 166900), (500, 163562), (700, 116830), (875, 93464), (980, 83450), (1000, 81781), (1225, 66760), (1400, 58415), (1669, 49000), (1750, 46732), (1960, 41725), (2450, 33380), (3338, 24500), (3500, 23366), (4900, 16690), (6125, 13352), (6676, 12250), (7000, 11683), (8345, 9800)]