19740720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{991}}^1$

素因数の和:1090

約数の個数: 80

約数和(自身を含む): 61996032

約数和(自身を除く): 42255312

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 83, 120, 166, 240, 249, 332, 415, 498, 664, 830, 991, 996, 1245, 1328, 1660, 1982, 1992, 2490, 2973, 3320, 3964, 3984, 4955, 4980, 5946, 6640, 7928, 9910, 9960, 11892, 14865, 15856, 19820, 19920, 23784, 29730, 39640, 47568, 59460, 79280, 82253, 118920, 164506, 237840, 246759, 329012, 411265, 493518, 658024, 822530, 987036, 1233795, 1316048, 1645060, 1974072, 2467590, 3290120, 3948144, 4935180, 6580240, 9870360, 19740720]

約数ペア:

[(1, 19740720), (2, 9870360), (3, 6580240), (4, 4935180), (5, 3948144), (6, 3290120), (8, 2467590), (10, 1974072), (12, 1645060), (15, 1316048), (16, 1233795), (20, 987036), (24, 822530), (30, 658024), (40, 493518), (48, 411265), (60, 329012), (80, 246759), (83, 237840), (120, 164506), (166, 118920), (240, 82253), (249, 79280), (332, 59460), (415, 47568), (498, 39640), (664, 29730), (830, 23784), (991, 19920), (996, 19820), (1245, 15856), (1328, 14865), (1660, 11892), (1982, 9960), (1992, 9910), (2490, 7928), (2973, 6640), (3320, 5946), (3964, 4980), (3984, 4955)]