821055820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1\times {\mathrm{239}}^1$

素因数の和:515

約数の個数: 96

約数和(自身を含む): 1900604160

約数和(自身を除く): 1079548340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 181, 239, 260, 292, 362, 365, 478, 724, 730, 905, 949, 956, 1195, 1460, 1810, 1898, 2353, 2390, 3107, 3620, 3796, 4706, 4745, 4780, 6214, 9412, 9490, 11765, 12428, 13213, 15535, 17447, 18980, 23530, 26426, 31070, 34894, 43259, 47060, 52852, 62140, 66065, 69788, 86518, 87235, 132130, 171769, 173036, 174470, 216295, 226811, 264260, 343538, 348940, 432590, 453622, 562367, 687076, 858845, 865180, 907244, 1124734, 1134055, 1717690, 2249468, 2268110, 2811835, 3157907, 3435380, 4536220, 5623670, 6315814, 11247340, 12631628, 15789535, 31579070, 41052791, 63158140, 82105582, 164211164, 205263955, 410527910, 821055820]

約数ペア:

[(1, 821055820), (2, 410527910), (4, 205263955), (5, 164211164), (10, 82105582), (13, 63158140), (20, 41052791), (26, 31579070), (52, 15789535), (65, 12631628), (73, 11247340), (130, 6315814), (146, 5623670), (181, 4536220), (239, 3435380), (260, 3157907), (292, 2811835), (362, 2268110), (365, 2249468), (478, 1717690), (724, 1134055), (730, 1124734), (905, 907244), (949, 865180), (956, 858845), (1195, 687076), (1460, 562367), (1810, 453622), (1898, 432590), (2353, 348940), (2390, 343538), (3107, 264260), (3620, 226811), (3796, 216295), (4706, 174470), (4745, 173036), (4780, 171769), (6214, 132130), (9412, 87235), (9490, 86518), (11765, 69788), (12428, 66065), (13213, 62140), (15535, 52852), (17447, 47060), (18980, 43259), (23530, 34894), (26426, 31070)]