20454240

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{991}}^1$

素因数の和:1052

約数の個数: 96

約数和(自身を含む): 65995776

約数和(自身を除く): 45541536

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 43, 48, 60, 80, 86, 96, 120, 129, 160, 172, 215, 240, 258, 344, 430, 480, 516, 645, 688, 860, 991, 1032, 1290, 1376, 1720, 1982, 2064, 2580, 2973, 3440, 3964, 4128, 4955, 5160, 5946, 6880, 7928, 9910, 10320, 11892, 14865, 15856, 19820, 20640, 23784, 29730, 31712, 39640, 42613, 47568, 59460, 79280, 85226, 95136, 118920, 127839, 158560, 170452, 213065, 237840, 255678, 340904, 426130, 475680, 511356, 639195, 681808, 852260, 1022712, 1278390, 1363616, 1704520, 2045424, 2556780, 3409040, 4090848, 5113560, 6818080, 10227120, 20454240]

約数ペア:

[(1, 20454240), (2, 10227120), (3, 6818080), (4, 5113560), (5, 4090848), (6, 3409040), (8, 2556780), (10, 2045424), (12, 1704520), (15, 1363616), (16, 1278390), (20, 1022712), (24, 852260), (30, 681808), (32, 639195), (40, 511356), (43, 475680), (48, 426130), (60, 340904), (80, 255678), (86, 237840), (96, 213065), (120, 170452), (129, 158560), (160, 127839), (172, 118920), (215, 95136), (240, 85226), (258, 79280), (344, 59460), (430, 47568), (480, 42613), (516, 39640), (645, 31712), (688, 29730), (860, 23784), (991, 20640), (1032, 19820), (1290, 15856), (1376, 14865), (1720, 11892), (1982, 10320), (2064, 9910), (2580, 7928), (2973, 6880), (3440, 5946), (3964, 5160), (4128, 4955)]