1279420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 2939328

約数和(自身を除く): 1659908

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 71, 85, 106, 142, 170, 212, 265, 284, 340, 355, 530, 710, 901, 1060, 1207, 1420, 1802, 2414, 3604, 3763, 4505, 4828, 6035, 7526, 9010, 12070, 15052, 18020, 18815, 24140, 37630, 63971, 75260, 127942, 255884, 319855, 639710, 1279420]

約数ペア:

[(1, 1279420), (2, 639710), (4, 319855), (5, 255884), (10, 127942), (17, 75260), (20, 63971), (34, 37630), (53, 24140), (68, 18815), (71, 18020), (85, 15052), (106, 12070), (142, 9010), (170, 7526), (212, 6035), (265, 4828), (284, 4505), (340, 3763), (355, 3604), (530, 2414), (710, 1802), (901, 1420), (1060, 1207)]