219917560

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{41969}}^1$

素因数の和:42111

約数の個数: 32

約数和(自身を含む): 498603600

約数和(自身を除く): 278686040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 41969, 83938, 167876, 209845, 335752, 419690, 839380, 1678760, 5497939, 10995878, 21991756, 27489695, 43983512, 54979390, 109958780, 219917560]

約数ペア:

[(1, 219917560), (2, 109958780), (4, 54979390), (5, 43983512), (8, 27489695), (10, 21991756), (20, 10995878), (40, 5497939), (131, 1678760), (262, 839380), (524, 419690), (655, 335752), (1048, 209845), (1310, 167876), (2620, 83938), (5240, 41969)]