20123760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{191}}^1\times {\mathrm{439}}^1$

素因数の和:646

約数の個数: 80

約数和(自身を含む): 62853120

約数和(自身を除く): 42729360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 191, 240, 382, 439, 573, 764, 878, 955, 1146, 1317, 1528, 1756, 1910, 2195, 2292, 2634, 2865, 3056, 3512, 3820, 4390, 4584, 5268, 5730, 6585, 7024, 7640, 8780, 9168, 10536, 11460, 13170, 15280, 17560, 21072, 22920, 26340, 35120, 45840, 52680, 83849, 105360, 167698, 251547, 335396, 419245, 503094, 670792, 838490, 1006188, 1257735, 1341584, 1676980, 2012376, 2515470, 3353960, 4024752, 5030940, 6707920, 10061880, 20123760]

約数ペア:

[(1, 20123760), (2, 10061880), (3, 6707920), (4, 5030940), (5, 4024752), (6, 3353960), (8, 2515470), (10, 2012376), (12, 1676980), (15, 1341584), (16, 1257735), (20, 1006188), (24, 838490), (30, 670792), (40, 503094), (48, 419245), (60, 335396), (80, 251547), (120, 167698), (191, 105360), (240, 83849), (382, 52680), (439, 45840), (573, 35120), (764, 26340), (878, 22920), (955, 21072), (1146, 17560), (1317, 15280), (1528, 13170), (1756, 11460), (1910, 10536), (2195, 9168), (2292, 8780), (2634, 7640), (2865, 7024), (3056, 6585), (3512, 5730), (3820, 5268), (4390, 4584)]