20921340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31699}}^1$

素因数の和:31722

約数の個数: 48

約数和(自身を含む): 63907200

約数和(自身を除く): 42985860

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 31699, 63398, 95097, 126796, 158495, 190194, 316990, 348689, 380388, 475485, 633980, 697378, 950970, 1046067, 1394756, 1743445, 1901940, 2092134, 3486890, 4184268, 5230335, 6973780, 10460670, 20921340]

約数ペア:

[(1, 20921340), (2, 10460670), (3, 6973780), (4, 5230335), (5, 4184268), (6, 3486890), (10, 2092134), (11, 1901940), (12, 1743445), (15, 1394756), (20, 1046067), (22, 950970), (30, 697378), (33, 633980), (44, 475485), (55, 380388), (60, 348689), (66, 316990), (110, 190194), (132, 158495), (165, 126796), (220, 95097), (330, 63398), (660, 31699)]