81849425

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 121123200

約数和(自身を除く): 39273775

約数列:

[1, 5, 7, 25, 35, 43, 73, 149, 175, 215, 301, 365, 511, 745, 1043, 1075, 1505, 1825, 2555, 3139, 3725, 5215, 6407, 7525, 10877, 12775, 15695, 21973, 26075, 32035, 44849, 54385, 76139, 78475, 109865, 160175, 224245, 271925, 380695, 467711, 549325, 1121225, 1903475, 2338555, 3273977, 11692775, 16369885, 81849425]

約数ペア:

[(1, 81849425), (5, 16369885), (7, 11692775), (25, 3273977), (35, 2338555), (43, 1903475), (73, 1121225), (149, 549325), (175, 467711), (215, 380695), (301, 271925), (365, 224245), (511, 160175), (745, 109865), (1043, 78475), (1075, 76139), (1505, 54385), (1825, 44849), (2555, 32035), (3139, 26075), (3725, 21973), (5215, 15695), (6407, 12775), (7525, 10877)]