20738880

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:421

約数の個数: 168

約数和(自身を含む): 75285600

約数和(自身を除く): 54546720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 32, 36, 38, 40, 45, 48, 57, 60, 64, 72, 76, 80, 90, 95, 96, 114, 120, 144, 152, 160, 171, 180, 190, 192, 228, 240, 285, 288, 304, 320, 342, 360, 379, 380, 456, 480, 570, 576, 608, 684, 720, 758, 760, 855, 912, 960, 1137, 1140, 1216, 1368, 1440, 1516, 1520, 1710, 1824, 1895, 2274, 2280, 2736, 2880, 3032, 3040, 3411, 3420, 3648, 3790, 4548, 4560, 5472, 5685, 6064, 6080, 6822, 6840, 7201, 7580, 9096, 9120, 10944, 11370, 12128, 13644, 13680, 14402, 15160, 17055, 18192, 18240, 21603, 22740, 24256, 27288, 27360, 28804, 30320, 34110, 36005, 36384, 43206, 45480, 54576, 54720, 57608, 60640, 64809, 68220, 72010, 72768, 86412, 90960, 108015, 109152, 115216, 121280, 129618, 136440, 144020, 172824, 181920, 216030, 218304, 230432, 259236, 272880, 288040, 324045, 345648, 363840, 432060, 460864, 518472, 545760, 576080, 648090, 691296, 864120, 1036944, 1091520, 1152160, 1296180, 1382592, 1728240, 2073888, 2304320, 2592360, 3456480, 4147776, 5184720, 6912960, 10369440, 20738880]

約数ペア:

[(1, 20738880), (2, 10369440), (3, 6912960), (4, 5184720), (5, 4147776), (6, 3456480), (8, 2592360), (9, 2304320), (10, 2073888), (12, 1728240), (15, 1382592), (16, 1296180), (18, 1152160), (19, 1091520), (20, 1036944), (24, 864120), (30, 691296), (32, 648090), (36, 576080), (38, 545760), (40, 518472), (45, 460864), (48, 432060), (57, 363840), (60, 345648), (64, 324045), (72, 288040), (76, 272880), (80, 259236), (90, 230432), (95, 218304), (96, 216030), (114, 181920), (120, 172824), (144, 144020), (152, 136440), (160, 129618), (171, 121280), (180, 115216), (190, 109152), (192, 108015), (228, 90960), (240, 86412), (285, 72768), (288, 72010), (304, 68220), (320, 64809), (342, 60640), (360, 57608), (379, 54720), (380, 54576), (456, 45480), (480, 43206), (570, 36384), (576, 36005), (608, 34110), (684, 30320), (720, 28804), (758, 27360), (760, 27288), (855, 24256), (912, 22740), (960, 21603), (1137, 18240), (1140, 18192), (1216, 17055), (1368, 15160), (1440, 14402), (1516, 13680), (1520, 13644), (1710, 12128), (1824, 11370), (1895, 10944), (2274, 9120), (2280, 9096), (2736, 7580), (2880, 7201), (3032, 6840), (3040, 6822), (3411, 6080), (3420, 6064), (3648, 5685), (3790, 5472), (4548, 4560)]