21520870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{13367}}^1$

素因数の和:13404

約数の個数: 32

約数和(自身を含む): 46199808

約数和(自身を除く): 24678938

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 805, 1610, 13367, 26734, 66835, 93569, 133670, 187138, 307441, 467845, 614882, 935690, 1537205, 2152087, 3074410, 4304174, 10760435, 21520870]

約数ペア:

[(1, 21520870), (2, 10760435), (5, 4304174), (7, 3074410), (10, 2152087), (14, 1537205), (23, 935690), (35, 614882), (46, 467845), (70, 307441), (115, 187138), (161, 133670), (230, 93569), (322, 66835), (805, 26734), (1610, 13367)]