220703980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{17713}}^1$

素因数の和:17818

約数の個数: 48

約数和(自身を含む): 535671360

約数和(自身を除く): 314967380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1780, 2492, 3115, 6230, 12460, 17713, 35426, 70852, 88565, 123991, 177130, 247982, 354260, 495964, 619955, 1239910, 1576457, 2479820, 3152914, 6305828, 7882285, 11035199, 15764570, 22070398, 31529140, 44140796, 55175995, 110351990, 220703980]

約数ペア:

[(1, 220703980), (2, 110351990), (4, 55175995), (5, 44140796), (7, 31529140), (10, 22070398), (14, 15764570), (20, 11035199), (28, 7882285), (35, 6305828), (70, 3152914), (89, 2479820), (140, 1576457), (178, 1239910), (356, 619955), (445, 495964), (623, 354260), (890, 247982), (1246, 177130), (1780, 123991), (2492, 88565), (3115, 70852), (6230, 35426), (12460, 17713)]