20821320

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1483}}^1$

素因数の和:1516

約数の個数: 128

約数和(自身を含む): 74793600

約数和(自身を除く): 53972280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 90, 104, 108, 117, 120, 130, 135, 156, 180, 195, 216, 234, 260, 270, 312, 351, 360, 390, 468, 520, 540, 585, 702, 780, 936, 1080, 1170, 1404, 1483, 1560, 1755, 2340, 2808, 2966, 3510, 4449, 4680, 5932, 7020, 7415, 8898, 11864, 13347, 14040, 14830, 17796, 19279, 22245, 26694, 29660, 35592, 38558, 40041, 44490, 53388, 57837, 59320, 66735, 77116, 80082, 88980, 96395, 106776, 115674, 133470, 154232, 160164, 173511, 177960, 192790, 200205, 231348, 266940, 289185, 320328, 347022, 385580, 400410, 462696, 520533, 533880, 578370, 694044, 771160, 800820, 867555, 1041066, 1156740, 1388088, 1601640, 1735110, 2082132, 2313480, 2602665, 3470220, 4164264, 5205330, 6940440, 10410660, 20821320]

約数ペア:

[(1, 20821320), (2, 10410660), (3, 6940440), (4, 5205330), (5, 4164264), (6, 3470220), (8, 2602665), (9, 2313480), (10, 2082132), (12, 1735110), (13, 1601640), (15, 1388088), (18, 1156740), (20, 1041066), (24, 867555), (26, 800820), (27, 771160), (30, 694044), (36, 578370), (39, 533880), (40, 520533), (45, 462696), (52, 400410), (54, 385580), (60, 347022), (65, 320328), (72, 289185), (78, 266940), (90, 231348), (104, 200205), (108, 192790), (117, 177960), (120, 173511), (130, 160164), (135, 154232), (156, 133470), (180, 115674), (195, 106776), (216, 96395), (234, 88980), (260, 80082), (270, 77116), (312, 66735), (351, 59320), (360, 57837), (390, 53388), (468, 44490), (520, 40041), (540, 38558), (585, 35592), (702, 29660), (780, 26694), (936, 22245), (1080, 19279), (1170, 17796), (1404, 14830), (1483, 14040), (1560, 13347), (1755, 11864), (2340, 8898), (2808, 7415), (2966, 7020), (3510, 5932), (4449, 4680)]