21129972

素因数分解:

$2^2\times 3^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{719}}^1$

素因数の和:836

約数の個数: 48

約数和(自身を含む): 51609600

約数和(自身を除く): 30479628

約数列:

[1, 2, 3, 4, 6, 12, 31, 62, 79, 93, 124, 158, 186, 237, 316, 372, 474, 719, 948, 1438, 2157, 2449, 2876, 4314, 4898, 7347, 8628, 9796, 14694, 22289, 29388, 44578, 56801, 66867, 89156, 113602, 133734, 170403, 227204, 267468, 340806, 681612, 1760831, 3521662, 5282493, 7043324, 10564986, 21129972]

約数ペア:

[(1, 21129972), (2, 10564986), (3, 7043324), (4, 5282493), (6, 3521662), (12, 1760831), (31, 681612), (62, 340806), (79, 267468), (93, 227204), (124, 170403), (158, 133734), (186, 113602), (237, 89156), (316, 66867), (372, 56801), (474, 44578), (719, 29388), (948, 22289), (1438, 14694), (2157, 9796), (2449, 8628), (2876, 7347), (4314, 4898)]