20128979520

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:161

約数の個数: 1120

約数和(自身を含む): 83273895936

約数和(自身を除く): 63144916416

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 27, 30, 31, 32, 36, 39, 40, 41, 45, 47, 48, 52, 54, 60, 62, 64, 65, 72, 78, 80, 81, 82, 90, 93, 94, 96, 104, 108, 117, 120, 123, 124, 130, 135, 141, 144, 155, 156, 160, 162, 164, 180, 186, 188, 192, 195, 205, 208, 216, 234, 235, 240, 246, 248, 260, 270, 279, 282, 288, 310, 312, 320, 324, 328, 351, 360, 369, 372, 376, 390, 403, 405, 410, 416, 423, 432, 465, 468, 470, 480, 492, 496, 520, 533, 540, 558, 564, 576, 585, 611, 615, 620, 624, 648, 656, 702, 705, 720, 738, 744, 752, 780, 806, 810, 820, 832, 837, 846, 864, 930, 936, 940, 960, 984, 992, 1040, 1053, 1066, 1080, 1107, 1116, 1128, 1170, 1209, 1222, 1230, 1240, 1248, 1269, 1271, 1296, 1312, 1395, 1404, 1410, 1440, 1457, 1476, 1488, 1504, 1560, 1599, 1612, 1620, 1640, 1674, 1692, 1728, 1755, 1833, 1845, 1860, 1872, 1880, 1927, 1968, 1984, 2015, 2080, 2106, 2115, 2132, 2160, 2214, 2232, 2256, 2340, 2418, 2444, 2460, 2480, 2496, 2511, 2538, 2542, 2592, 2624, 2665, 2790, 2808, 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約数ペア:

[(1, 20128979520), (2, 10064489760), (3, 6709659840), (4, 5032244880), (5, 4025795904), (6, 3354829920), (8, 2516122440), (9, 2236553280), (10, 2012897952), (12, 1677414960), (13, 1548383040), (15, 1341931968), (16, 1258061220), (18, 1118276640), (20, 1006448976), (24, 838707480), (26, 774191520), (27, 745517760), (30, 670965984), (31, 649321920), (32, 629030610), (36, 559138320), (39, 516127680), (40, 503224488), (41, 490950720), (45, 447310656), (47, 428276160), (48, 419353740), (52, 387095760), (54, 372758880), (60, 335482992), (62, 324660960), (64, 314515305), (65, 309676608), (72, 279569160), (78, 258063840), (80, 251612244), (81, 248505920), (82, 245475360), (90, 223655328), (93, 216440640), (94, 214138080), (96, 209676870), (104, 193547880), (108, 186379440), (117, 172042560), (120, 167741496), (123, 163650240), (124, 162330480), (130, 154838304), (135, 149103552), (141, 142758720), (144, 139784580), (155, 129864384), (156, 129031920), (160, 125806122), (162, 124252960), (164, 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