21510764

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 42989856

約数和(自身を除く): 21479092

約数列:

[1, 2, 4, 11, 22, 37, 44, 73, 74, 146, 148, 181, 292, 362, 407, 724, 803, 814, 1606, 1628, 1991, 2701, 3212, 3982, 5402, 6697, 7964, 10804, 13213, 13394, 26426, 26788, 29711, 52852, 59422, 73667, 118844, 145343, 147334, 290686, 294668, 488881, 581372, 977762, 1955524, 5377691, 10755382, 21510764]

約数ペア:

[(1, 21510764), (2, 10755382), (4, 5377691), (11, 1955524), (22, 977762), (37, 581372), (44, 488881), (73, 294668), (74, 290686), (146, 147334), (148, 145343), (181, 118844), (292, 73667), (362, 59422), (407, 52852), (724, 29711), (803, 26788), (814, 26426), (1606, 13394), (1628, 13213), (1991, 10804), (2701, 7964), (3212, 6697), (3982, 5402)]