21176272

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1669}}^1$

素因数の和:1751

約数の個数: 40

約数和(自身を含む): 44936360

約数和(自身を除く): 23760088

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1586, 1669, 3172, 3338, 6344, 6676, 12688, 13352, 21697, 26704, 43394, 86788, 101809, 173576, 203618, 347152, 407236, 814472, 1323517, 1628944, 2647034, 5294068, 10588136, 21176272]

約数ペア:

[(1, 21176272), (2, 10588136), (4, 5294068), (8, 2647034), (13, 1628944), (16, 1323517), (26, 814472), (52, 407236), (61, 347152), (104, 203618), (122, 173576), (208, 101809), (244, 86788), (488, 43394), (793, 26704), (976, 21697), (1586, 13352), (1669, 12688), (3172, 6676), (3338, 6344)]