20298880

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:246

約数の個数: 128

約数和(自身を含む): 58164480

約数和(自身を除く): 37865600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 64, 70, 80, 92, 112, 115, 128, 140, 160, 161, 184, 197, 224, 230, 280, 320, 322, 368, 394, 448, 460, 560, 640, 644, 736, 788, 805, 896, 920, 985, 1120, 1288, 1379, 1472, 1576, 1610, 1840, 1970, 2240, 2576, 2758, 2944, 3152, 3220, 3680, 3940, 4480, 4531, 5152, 5516, 6304, 6440, 6895, 7360, 7880, 9062, 10304, 11032, 12608, 12880, 13790, 14720, 15760, 18124, 20608, 22064, 22655, 25216, 25760, 27580, 31520, 31717, 36248, 44128, 45310, 51520, 55160, 63040, 63434, 72496, 88256, 90620, 103040, 110320, 126080, 126868, 144992, 158585, 176512, 181240, 220640, 253736, 289984, 317170, 362480, 441280, 507472, 579968, 634340, 724960, 882560, 1014944, 1268680, 1449920, 2029888, 2537360, 2899840, 4059776, 5074720, 10149440, 20298880]

約数ペア:

[(1, 20298880), (2, 10149440), (4, 5074720), (5, 4059776), (7, 2899840), (8, 2537360), (10, 2029888), (14, 1449920), (16, 1268680), (20, 1014944), (23, 882560), (28, 724960), (32, 634340), (35, 579968), (40, 507472), (46, 441280), (56, 362480), (64, 317170), (70, 289984), (80, 253736), (92, 220640), (112, 181240), (115, 176512), (128, 158585), (140, 144992), (160, 126868), (161, 126080), (184, 110320), (197, 103040), (224, 90620), (230, 88256), (280, 72496), (320, 63434), (322, 63040), (368, 55160), (394, 51520), (448, 45310), (460, 44128), (560, 36248), (640, 31717), (644, 31520), (736, 27580), (788, 25760), (805, 25216), (896, 22655), (920, 22064), (985, 20608), (1120, 18124), (1288, 15760), (1379, 14720), (1472, 13790), (1576, 12880), (1610, 12608), (1840, 11032), (1970, 10304), (2240, 9062), (2576, 7880), (2758, 7360), (2944, 6895), (3152, 6440), (3220, 6304), (3680, 5516), (3940, 5152), (4480, 4531)]