72217740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{171947}}^1$

素因数の和:171966

約数の個数: 48

約数和(自身を含む): 231098112

約数和(自身を除く): 158880372

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 171947, 343894, 515841, 687788, 859735, 1031682, 1203629, 1719470, 2063364, 2407258, 2579205, 3438940, 3610887, 4814516, 5158410, 6018145, 7221774, 10316820, 12036290, 14443548, 18054435, 24072580, 36108870, 72217740]

約数ペア:

[(1, 72217740), (2, 36108870), (3, 24072580), (4, 18054435), (5, 14443548), (6, 12036290), (7, 10316820), (10, 7221774), (12, 6018145), (14, 5158410), (15, 4814516), (20, 3610887), (21, 3438940), (28, 2579205), (30, 2407258), (35, 2063364), (42, 1719470), (60, 1203629), (70, 1031682), (84, 859735), (105, 687788), (140, 515841), (210, 343894), (420, 171947)]