21053956

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4021}}^1$

素因数の和:4060

約数の個数: 48

約数和(自身を含む): 48650112

約数和(自身を除く): 27596156

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 308, 374, 476, 748, 1309, 2618, 4021, 5236, 8042, 16084, 28147, 44231, 56294, 68357, 88462, 112588, 136714, 176924, 273428, 309617, 478499, 619234, 751927, 956998, 1238468, 1503854, 1913996, 3007708, 5263489, 10526978, 21053956]

約数ペア:

[(1, 21053956), (2, 10526978), (4, 5263489), (7, 3007708), (11, 1913996), (14, 1503854), (17, 1238468), (22, 956998), (28, 751927), (34, 619234), (44, 478499), (68, 309617), (77, 273428), (119, 176924), (154, 136714), (187, 112588), (238, 88462), (308, 68357), (374, 56294), (476, 44231), (748, 28147), (1309, 16084), (2618, 8042), (4021, 5236)]