257908920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{30271}}^1$

素因数の和:30356

約数の個数: 64

約数和(自身を含む): 784650240

約数和(自身を除く): 526741320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2840, 4260, 8520, 30271, 60542, 90813, 121084, 151355, 181626, 242168, 302710, 363252, 454065, 605420, 726504, 908130, 1210840, 1816260, 2149241, 3632520, 4298482, 6447723, 8596964, 10746205, 12895446, 17193928, 21492410, 25790892, 32238615, 42984820, 51581784, 64477230, 85969640, 128954460, 257908920]

約数ペア:

[(1, 257908920), (2, 128954460), (3, 85969640), (4, 64477230), (5, 51581784), (6, 42984820), (8, 32238615), (10, 25790892), (12, 21492410), (15, 17193928), (20, 12895446), (24, 10746205), (30, 8596964), (40, 6447723), (60, 4298482), (71, 3632520), (120, 2149241), (142, 1816260), (213, 1210840), (284, 908130), (355, 726504), (426, 605420), (568, 454065), (710, 363252), (852, 302710), (1065, 242168), (1420, 181626), (1704, 151355), (2130, 121084), (2840, 90813), (4260, 60542), (8520, 30271)]