21590510

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1427}}^1$

素因数の和:1540

約数の個数: 32

約数和(自身を含む): 41640480

約数和(自身を除く): 20049970

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 170, 178, 445, 890, 1427, 1513, 2854, 3026, 7135, 7565, 14270, 15130, 24259, 48518, 121295, 127003, 242590, 254006, 635015, 1270030, 2159051, 4318102, 10795255, 21590510]

約数ペア:

[(1, 21590510), (2, 10795255), (5, 4318102), (10, 2159051), (17, 1270030), (34, 635015), (85, 254006), (89, 242590), (170, 127003), (178, 121295), (445, 48518), (890, 24259), (1427, 15130), (1513, 14270), (2854, 7565), (3026, 7135)]