631312700

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{509}}^1$

素因数の和:759

約数の個数: 72

約数和(自身を含む): 1398868800

約数和(自身を除く): 767556100

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 157, 158, 314, 316, 395, 509, 628, 785, 790, 1018, 1570, 1580, 1975, 2036, 2545, 3140, 3925, 3950, 5090, 7850, 7900, 10180, 12403, 12725, 15700, 24806, 25450, 40211, 49612, 50900, 62015, 79913, 80422, 124030, 159826, 160844, 201055, 248060, 310075, 319652, 399565, 402110, 620150, 799130, 804220, 1005275, 1240300, 1598260, 1997825, 2010550, 3995650, 4021100, 6313127, 7991300, 12626254, 25252508, 31565635, 63131270, 126262540, 157828175, 315656350, 631312700]

約数ペア:

[(1, 631312700), (2, 315656350), (4, 157828175), (5, 126262540), (10, 63131270), (20, 31565635), (25, 25252508), (50, 12626254), (79, 7991300), (100, 6313127), (157, 4021100), (158, 3995650), (314, 2010550), (316, 1997825), (395, 1598260), (509, 1240300), (628, 1005275), (785, 804220), (790, 799130), (1018, 620150), (1570, 402110), (1580, 399565), (1975, 319652), (2036, 310075), (2545, 248060), (3140, 201055), (3925, 160844), (3950, 159826), (5090, 124030), (7850, 80422), (7900, 79913), (10180, 62015), (12403, 50900), (12725, 49612), (15700, 40211), (24806, 25450)]