20687617920

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{20681}}^1$

素因数の和:21224

約数の個数: 128

約数和(自身を含む): 66071544480

約数和(自身を除く): 45383926560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 521, 640, 960, 1042, 1563, 1920, 2084, 2605, 3126, 4168, 5210, 6252, 7815, 8336, 10420, 12504, 15630, 16672, 20681, 20840, 25008, 31260, 33344, 41362, 41680, 50016, 62043, 62520, 66688, 82724, 83360, 100032, 103405, 124086, 125040, 165448, 166720, 200064, 206810, 248172, 250080, 310215, 330896, 333440, 413620, 496344, 500160, 620430, 661792, 827240, 992688, 1000320, 1240860, 1323584, 1654480, 1985376, 2481720, 2647168, 3308960, 3970752, 4963440, 6617920, 7941504, 9926880, 10774801, 13235840, 19853760, 21549602, 32324403, 39707520, 43099204, 53874005, 64648806, 86198408, 107748010, 129297612, 161622015, 172396816, 215496020, 258595224, 323244030, 344793632, 430992040, 517190448, 646488060, 689587264, 861984080, 1034380896, 1292976120, 1379174528, 1723968160, 2068761792, 2585952240, 3447936320, 4137523584, 5171904480, 6895872640, 10343808960, 20687617920]

約数ペア:

[(1, 20687617920), (2, 10343808960), (3, 6895872640), (4, 5171904480), (5, 4137523584), (6, 3447936320), (8, 2585952240), (10, 2068761792), (12, 1723968160), (15, 1379174528), (16, 1292976120), (20, 1034380896), (24, 861984080), (30, 689587264), (32, 646488060), (40, 517190448), (48, 430992040), (60, 344793632), (64, 323244030), (80, 258595224), (96, 215496020), (120, 172396816), (128, 161622015), (160, 129297612), (192, 107748010), (240, 86198408), (320, 64648806), (384, 53874005), (480, 43099204), (521, 39707520), (640, 32324403), (960, 21549602), (1042, 19853760), (1563, 13235840), (1920, 10774801), (2084, 9926880), (2605, 7941504), (3126, 6617920), (4168, 4963440), (5210, 3970752), (6252, 3308960), (7815, 2647168), (8336, 2481720), (10420, 1985376), (12504, 1654480), (15630, 1323584), (16672, 1240860), (20681, 1000320), (20840, 992688), (25008, 827240), (31260, 661792), (33344, 620430), (41362, 500160), (41680, 496344), (50016, 413620), (62043, 333440), (62520, 330896), (66688, 310215), (82724, 250080), (83360, 248172), (100032, 206810), (103405, 200064), (124086, 166720), (125040, 165448)]