12639220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{787}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 29389248

約数和(自身を除く): 16750028

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 787, 803, 1460, 1574, 1606, 3148, 3212, 3935, 4015, 7870, 8030, 8657, 15740, 16060, 17314, 34628, 43285, 57451, 86570, 114902, 173140, 229804, 287255, 574510, 631961, 1149020, 1263922, 2527844, 3159805, 6319610, 12639220]

約数ペア:

[(1, 12639220), (2, 6319610), (4, 3159805), (5, 2527844), (10, 1263922), (11, 1149020), (20, 631961), (22, 574510), (44, 287255), (55, 229804), (73, 173140), (110, 114902), (146, 86570), (220, 57451), (292, 43285), (365, 34628), (730, 17314), (787, 16060), (803, 15740), (1460, 8657), (1574, 8030), (1606, 7870), (3148, 4015), (3212, 3935)]