2557651640

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{443}}^1$

素因数の和:621

約数の個数: 128

約数和(自身を含む): 6122511360

約数和(自身を除く): 3564859720

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 47, 74, 83, 94, 148, 166, 185, 188, 235, 296, 332, 370, 376, 415, 443, 470, 664, 740, 830, 886, 940, 1480, 1660, 1739, 1772, 1880, 2215, 3071, 3320, 3478, 3544, 3901, 4430, 6142, 6956, 7802, 8695, 8860, 12284, 13912, 15355, 15604, 16391, 17390, 17720, 19505, 20821, 24568, 30710, 31208, 32782, 34780, 36769, 39010, 41642, 61420, 65564, 69560, 73538, 78020, 81955, 83284, 104105, 122840, 131128, 144337, 147076, 156040, 163910, 166568, 183845, 208210, 288674, 294152, 327820, 367690, 416420, 577348, 655640, 721685, 735380, 770377, 832840, 1154696, 1360453, 1443370, 1470760, 1540754, 1728143, 2720906, 2886740, 3081508, 3456286, 3851885, 5441812, 5773480, 6163016, 6802265, 6912572, 7703770, 8640715, 10883624, 13604530, 13825144, 15407540, 17281430, 27209060, 30815080, 34562860, 54418120, 63941291, 69125720, 127882582, 255765164, 319706455, 511530328, 639412910, 1278825820, 2557651640]

約数ペア:

[(1, 2557651640), (2, 1278825820), (4, 639412910), (5, 511530328), (8, 319706455), (10, 255765164), (20, 127882582), (37, 69125720), (40, 63941291), (47, 54418120), (74, 34562860), (83, 30815080), (94, 27209060), (148, 17281430), (166, 15407540), (185, 13825144), (188, 13604530), (235, 10883624), (296, 8640715), (332, 7703770), (370, 6912572), (376, 6802265), (415, 6163016), (443, 5773480), (470, 5441812), (664, 3851885), (740, 3456286), (830, 3081508), (886, 2886740), (940, 2720906), (1480, 1728143), (1660, 1540754), (1739, 1470760), (1772, 1443370), (1880, 1360453), (2215, 1154696), (3071, 832840), (3320, 770377), (3478, 735380), (3544, 721685), (3901, 655640), (4430, 577348), (6142, 416420), (6956, 367690), (7802, 327820), (8695, 294152), (8860, 288674), (12284, 208210), (13912, 183845), (15355, 166568), (15604, 163910), (16391, 156040), (17390, 147076), (17720, 144337), (19505, 131128), (20821, 122840), (24568, 104105), (30710, 83284), (31208, 81955), (32782, 78020), (34780, 73538), (36769, 69560), (39010, 65564), (41642, 61420)]