20268760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{727}}^1$

素因数の和:796

約数の個数: 64

約数和(自身を含む): 49533120

約数和(自身を除く): 29264360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 41, 68, 82, 85, 136, 164, 170, 205, 328, 340, 410, 680, 697, 727, 820, 1394, 1454, 1640, 2788, 2908, 3485, 3635, 5576, 5816, 6970, 7270, 12359, 13940, 14540, 24718, 27880, 29080, 29807, 49436, 59614, 61795, 98872, 119228, 123590, 149035, 238456, 247180, 298070, 494360, 506719, 596140, 1013438, 1192280, 2026876, 2533595, 4053752, 5067190, 10134380, 20268760]

約数ペア:

[(1, 20268760), (2, 10134380), (4, 5067190), (5, 4053752), (8, 2533595), (10, 2026876), (17, 1192280), (20, 1013438), (34, 596140), (40, 506719), (41, 494360), (68, 298070), (82, 247180), (85, 238456), (136, 149035), (164, 123590), (170, 119228), (205, 98872), (328, 61795), (340, 59614), (410, 49436), (680, 29807), (697, 29080), (727, 27880), (820, 24718), (1394, 14540), (1454, 13940), (1640, 12359), (2788, 7270), (2908, 6970), (3485, 5816), (3635, 5576)]