20265320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{277}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 48038400

約数和(自身を除く): 27773080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 59, 62, 118, 124, 155, 236, 248, 277, 295, 310, 472, 554, 590, 620, 1108, 1180, 1240, 1385, 1829, 2216, 2360, 2770, 3658, 5540, 7316, 8587, 9145, 11080, 14632, 16343, 17174, 18290, 32686, 34348, 36580, 42935, 65372, 68696, 73160, 81715, 85870, 130744, 163430, 171740, 326860, 343480, 506633, 653720, 1013266, 2026532, 2533165, 4053064, 5066330, 10132660, 20265320]

約数ペア:

[(1, 20265320), (2, 10132660), (4, 5066330), (5, 4053064), (8, 2533165), (10, 2026532), (20, 1013266), (31, 653720), (40, 506633), (59, 343480), (62, 326860), (118, 171740), (124, 163430), (155, 130744), (236, 85870), (248, 81715), (277, 73160), (295, 68696), (310, 65372), (472, 42935), (554, 36580), (590, 34348), (620, 32686), (1108, 18290), (1180, 17174), (1240, 16343), (1385, 14632), (1829, 11080), (2216, 9145), (2360, 8587), (2770, 7316), (3658, 5540)]