20205480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1033}}^1$

素因数の和:1210

約数の個数: 64

約数和(自身を含む): 61047360

約数和(自身を除く): 40841880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 163, 326, 489, 652, 815, 978, 1033, 1304, 1630, 1956, 2066, 2445, 3099, 3260, 3912, 4132, 4890, 5165, 6198, 6520, 8264, 9780, 10330, 12396, 15495, 19560, 20660, 24792, 30990, 41320, 61980, 123960, 168379, 336758, 505137, 673516, 841895, 1010274, 1347032, 1683790, 2020548, 2525685, 3367580, 4041096, 5051370, 6735160, 10102740, 20205480]

約数ペア:

[(1, 20205480), (2, 10102740), (3, 6735160), (4, 5051370), (5, 4041096), (6, 3367580), (8, 2525685), (10, 2020548), (12, 1683790), (15, 1347032), (20, 1010274), (24, 841895), (30, 673516), (40, 505137), (60, 336758), (120, 168379), (163, 123960), (326, 61980), (489, 41320), (652, 30990), (815, 24792), (978, 20660), (1033, 19560), (1304, 15495), (1630, 12396), (1956, 10330), (2066, 9780), (2445, 8264), (3099, 6520), (3260, 6198), (3912, 5165), (4132, 4890)]