397991920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1709}}^1$

素因数の和:1834

約数の個数: 80

約数和(自身を含む): 961813440

約数和(自身を除く): 563821520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 71, 80, 82, 142, 164, 205, 284, 328, 355, 410, 568, 656, 710, 820, 1136, 1420, 1640, 1709, 2840, 2911, 3280, 3418, 5680, 5822, 6836, 8545, 11644, 13672, 14555, 17090, 23288, 27344, 29110, 34180, 46576, 58220, 68360, 70069, 116440, 121339, 136720, 140138, 232880, 242678, 280276, 350345, 485356, 560552, 606695, 700690, 970712, 1121104, 1213390, 1401380, 1941424, 2426780, 2802760, 4853560, 4974899, 5605520, 9707120, 9949798, 19899596, 24874495, 39799192, 49748990, 79598384, 99497980, 198995960, 397991920]

約数ペア:

[(1, 397991920), (2, 198995960), (4, 99497980), (5, 79598384), (8, 49748990), (10, 39799192), (16, 24874495), (20, 19899596), (40, 9949798), (41, 9707120), (71, 5605520), (80, 4974899), (82, 4853560), (142, 2802760), (164, 2426780), (205, 1941424), (284, 1401380), (328, 1213390), (355, 1121104), (410, 970712), (568, 700690), (656, 606695), (710, 560552), (820, 485356), (1136, 350345), (1420, 280276), (1640, 242678), (1709, 232880), (2840, 140138), (2911, 136720), (3280, 121339), (3418, 116440), (5680, 70069), (5822, 68360), (6836, 58220), (8545, 46576), (11644, 34180), (13672, 29110), (14555, 27344), (17090, 23288)]