213848005

素因数分解:

$5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 311698800

約数和(自身を除く): 97850795

約数列:

[1, 5, 7, 35, 41, 49, 61, 205, 245, 287, 305, 349, 427, 1435, 1745, 2009, 2135, 2443, 2501, 2989, 10045, 12215, 12505, 14309, 14945, 17101, 17507, 21289, 71545, 85505, 87535, 100163, 106445, 122549, 149023, 500815, 612745, 701141, 745115, 872849, 1043161, 3505705, 4364245, 5215805, 6109943, 30549715, 42769601, 213848005]

約数ペア:

[(1, 213848005), (5, 42769601), (7, 30549715), (35, 6109943), (41, 5215805), (49, 4364245), (61, 3505705), (205, 1043161), (245, 872849), (287, 745115), (305, 701141), (349, 612745), (427, 500815), (1435, 149023), (1745, 122549), (2009, 106445), (2135, 100163), (2443, 87535), (2501, 85505), (2989, 71545), (10045, 21289), (12215, 17507), (12505, 17101), (14309, 14945)]