205371280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{82811}}^1$

素因数の和:82855

約数の個数: 40

約数和(自身を含む): 492897024

約数和(自身を除く): 287525744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 82811, 165622, 331244, 414055, 662488, 828110, 1324976, 1656220, 2567141, 3312440, 5134282, 6624880, 10268564, 12835705, 20537128, 25671410, 41074256, 51342820, 102685640, 205371280]

約数ペア:

[(1, 205371280), (2, 102685640), (4, 51342820), (5, 41074256), (8, 25671410), (10, 20537128), (16, 12835705), (20, 10268564), (31, 6624880), (40, 5134282), (62, 3312440), (80, 2567141), (124, 1656220), (155, 1324976), (248, 828110), (310, 662488), (496, 414055), (620, 331244), (1240, 165622), (2480, 82811)]