21038560

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5717}}^1$

素因数の和:5755

約数の個数: 48

約数和(自身を含む): 51873696

約数和(自身を除く): 30835136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5717, 11434, 22868, 28585, 45736, 57170, 91472, 114340, 131491, 182944, 228680, 262982, 457360, 525964, 657455, 914720, 1051928, 1314910, 2103856, 2629820, 4207712, 5259640, 10519280, 21038560]

約数ペア:

[(1, 21038560), (2, 10519280), (4, 5259640), (5, 4207712), (8, 2629820), (10, 2103856), (16, 1314910), (20, 1051928), (23, 914720), (32, 657455), (40, 525964), (46, 457360), (80, 262982), (92, 228680), (115, 182944), (160, 131491), (184, 114340), (230, 91472), (368, 57170), (460, 45736), (736, 28585), (920, 22868), (1840, 11434), (3680, 5717)]