25278440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{787}}^1$

素因数の和:882

約数の個数: 64

約数和(自身を含む): 62976960

約数和(自身を除く): 37698520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 730, 787, 803, 1460, 1574, 1606, 2920, 3148, 3212, 3935, 4015, 6296, 6424, 7870, 8030, 8657, 15740, 16060, 17314, 31480, 32120, 34628, 43285, 57451, 69256, 86570, 114902, 173140, 229804, 287255, 346280, 459608, 574510, 631961, 1149020, 1263922, 2298040, 2527844, 3159805, 5055688, 6319610, 12639220, 25278440]

約数ペア:

[(1, 25278440), (2, 12639220), (4, 6319610), (5, 5055688), (8, 3159805), (10, 2527844), (11, 2298040), (20, 1263922), (22, 1149020), (40, 631961), (44, 574510), (55, 459608), (73, 346280), (88, 287255), (110, 229804), (146, 173140), (220, 114902), (292, 86570), (365, 69256), (440, 57451), (584, 43285), (730, 34628), (787, 32120), (803, 31480), (1460, 17314), (1574, 16060), (1606, 15740), (2920, 8657), (3148, 8030), (3212, 7870), (3935, 6424), (4015, 6296)]