637420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 1592640

約数和(自身を除く): 955220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 157, 203, 290, 314, 406, 580, 628, 785, 812, 1015, 1099, 1570, 2030, 2198, 3140, 4060, 4396, 4553, 5495, 9106, 10990, 18212, 21980, 22765, 31871, 45530, 63742, 91060, 127484, 159355, 318710, 637420]

約数ペア:

[(1, 637420), (2, 318710), (4, 159355), (5, 127484), (7, 91060), (10, 63742), (14, 45530), (20, 31871), (28, 22765), (29, 21980), (35, 18212), (58, 10990), (70, 9106), (116, 5495), (140, 4553), (145, 4396), (157, 4060), (203, 3140), (290, 2198), (314, 2030), (406, 1570), (580, 1099), (628, 1015), (785, 812)]