256101260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^2$

素因数の和:303

約数の個数: 72

約数和(自身を含む): 583130016

約数和(自身を除く): 327028756

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 103, 142, 170, 206, 284, 340, 355, 412, 515, 710, 1030, 1207, 1420, 1751, 2060, 2414, 3502, 4828, 6035, 7004, 7313, 8755, 10609, 12070, 14626, 17510, 21218, 24140, 29252, 35020, 36565, 42436, 53045, 73130, 106090, 124321, 146260, 180353, 212180, 248642, 360706, 497284, 621605, 721412, 753239, 901765, 1243210, 1506478, 1803530, 2486420, 3012956, 3607060, 3766195, 7532390, 12805063, 15064780, 25610126, 51220252, 64025315, 128050630, 256101260]

約数ペア:

[(1, 256101260), (2, 128050630), (4, 64025315), (5, 51220252), (10, 25610126), (17, 15064780), (20, 12805063), (34, 7532390), (68, 3766195), (71, 3607060), (85, 3012956), (103, 2486420), (142, 1803530), (170, 1506478), (206, 1243210), (284, 901765), (340, 753239), (355, 721412), (412, 621605), (515, 497284), (710, 360706), (1030, 248642), (1207, 212180), (1420, 180353), (1751, 146260), (2060, 124321), (2414, 106090), (3502, 73130), (4828, 53045), (6035, 42436), (7004, 36565), (7313, 35020), (8755, 29252), (10609, 24140), (12070, 21218), (14626, 17510)]