20764400

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:139

約数の個数: 120

約数和(自身を含む): 54338784

約数和(自身を除く): 33574384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 37, 40, 46, 50, 61, 74, 80, 92, 100, 115, 122, 148, 184, 185, 200, 230, 244, 296, 305, 368, 370, 400, 460, 488, 575, 592, 610, 740, 851, 920, 925, 976, 1150, 1220, 1403, 1480, 1525, 1702, 1840, 1850, 2257, 2300, 2440, 2806, 2960, 3050, 3404, 3700, 4255, 4514, 4600, 4880, 5612, 6100, 6808, 7015, 7400, 8510, 9028, 9200, 11224, 11285, 12200, 13616, 14030, 14800, 17020, 18056, 21275, 22448, 22570, 24400, 28060, 34040, 35075, 36112, 42550, 45140, 51911, 56120, 56425, 68080, 70150, 85100, 90280, 103822, 112240, 112850, 140300, 170200, 180560, 207644, 225700, 259555, 280600, 340400, 415288, 451400, 519110, 561200, 830576, 902800, 1038220, 1297775, 2076440, 2595550, 4152880, 5191100, 10382200, 20764400]

約数ペア:

[(1, 20764400), (2, 10382200), (4, 5191100), (5, 4152880), (8, 2595550), (10, 2076440), (16, 1297775), (20, 1038220), (23, 902800), (25, 830576), (37, 561200), (40, 519110), (46, 451400), (50, 415288), (61, 340400), (74, 280600), (80, 259555), (92, 225700), (100, 207644), (115, 180560), (122, 170200), (148, 140300), (184, 112850), (185, 112240), (200, 103822), (230, 90280), (244, 85100), (296, 70150), (305, 68080), (368, 56425), (370, 56120), (400, 51911), (460, 45140), (488, 42550), (575, 36112), (592, 35075), (610, 34040), (740, 28060), (851, 24400), (920, 22570), (925, 22448), (976, 21275), (1150, 18056), (1220, 17020), (1403, 14800), (1480, 14030), (1525, 13616), (1702, 12200), (1840, 11285), (1850, 11224), (2257, 9200), (2300, 9028), (2440, 8510), (2806, 7400), (2960, 7015), (3050, 6808), (3404, 6100), (3700, 5612), (4255, 4880), (4514, 4600)]