2020479920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{281}}^1\times {\mathrm{311}}^1$

素因数の和:639

約数の個数: 120

約数和(自身を含む): 5024062368

約数和(自身を除く): 3003582448

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 281, 289, 311, 340, 562, 578, 622, 680, 1124, 1156, 1244, 1360, 1405, 1445, 1555, 2248, 2312, 2488, 2810, 2890, 3110, 4496, 4624, 4777, 4976, 5287, 5620, 5780, 6220, 9554, 10574, 11240, 11560, 12440, 19108, 21148, 22480, 23120, 23885, 24880, 26435, 38216, 42296, 47770, 52870, 76432, 81209, 84592, 87391, 89879, 95540, 105740, 162418, 174782, 179758, 191080, 211480, 324836, 349564, 359516, 382160, 406045, 422960, 436955, 449395, 649672, 699128, 719032, 812090, 873910, 898790, 1299344, 1398256, 1438064, 1485647, 1624180, 1747820, 1797580, 2971294, 3248360, 3495640, 3595160, 5942588, 6496720, 6991280, 7190320, 7428235, 11885176, 14856470, 23770352, 25255999, 29712940, 50511998, 59425880, 101023996, 118851760, 126279995, 202047992, 252559990, 404095984, 505119980, 1010239960, 2020479920]

約数ペア:

[(1, 2020479920), (2, 1010239960), (4, 505119980), (5, 404095984), (8, 252559990), (10, 202047992), (16, 126279995), (17, 118851760), (20, 101023996), (34, 59425880), (40, 50511998), (68, 29712940), (80, 25255999), (85, 23770352), (136, 14856470), (170, 11885176), (272, 7428235), (281, 7190320), (289, 6991280), (311, 6496720), (340, 5942588), (562, 3595160), (578, 3495640), (622, 3248360), (680, 2971294), (1124, 1797580), (1156, 1747820), (1244, 1624180), (1360, 1485647), (1405, 1438064), (1445, 1398256), (1555, 1299344), (2248, 898790), (2312, 873910), (2488, 812090), (2810, 719032), (2890, 699128), (3110, 649672), (4496, 449395), (4624, 436955), (4777, 422960), (4976, 406045), (5287, 382160), (5620, 359516), (5780, 349564), (6220, 324836), (9554, 211480), (10574, 191080), (11240, 179758), (11560, 174782), (12440, 162418), (19108, 105740), (21148, 95540), (22480, 89879), (23120, 87391), (23885, 84592), (24880, 81209), (26435, 76432), (38216, 52870), (42296, 47770)]