27920115

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 50738688

約数和(自身を除く): 22818573

約数列:

[1, 3, 5, 9, 15, 43, 45, 47, 129, 141, 215, 235, 307, 387, 423, 645, 705, 921, 1535, 1935, 2021, 2115, 2763, 4605, 6063, 10105, 13201, 13815, 14429, 18189, 30315, 39603, 43287, 66005, 72145, 90945, 118809, 129861, 198015, 216435, 594045, 620447, 649305, 1861341, 3102235, 5584023, 9306705, 27920115]

約数ペア:

[(1, 27920115), (3, 9306705), (5, 5584023), (9, 3102235), (15, 1861341), (43, 649305), (45, 620447), (47, 594045), (129, 216435), (141, 198015), (215, 129861), (235, 118809), (307, 90945), (387, 72145), (423, 66005), (645, 43287), (705, 39603), (921, 30315), (1535, 18189), (1935, 14429), (2021, 13815), (2115, 13201), (2763, 10105), (4605, 6063)]