19883120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:262

約数の個数: 80

約数和(自身を含む): 49520640

約数和(自身を除く): 29637520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 103, 127, 152, 190, 206, 254, 304, 380, 412, 508, 515, 635, 760, 824, 1016, 1030, 1270, 1520, 1648, 1957, 2032, 2060, 2413, 2540, 3914, 4120, 4826, 5080, 7828, 8240, 9652, 9785, 10160, 12065, 13081, 15656, 19304, 19570, 24130, 26162, 31312, 38608, 39140, 48260, 52324, 65405, 78280, 96520, 104648, 130810, 156560, 193040, 209296, 248539, 261620, 497078, 523240, 994156, 1046480, 1242695, 1988312, 2485390, 3976624, 4970780, 9941560, 19883120]

約数ペア:

[(1, 19883120), (2, 9941560), (4, 4970780), (5, 3976624), (8, 2485390), (10, 1988312), (16, 1242695), (19, 1046480), (20, 994156), (38, 523240), (40, 497078), (76, 261620), (80, 248539), (95, 209296), (103, 193040), (127, 156560), (152, 130810), (190, 104648), (206, 96520), (254, 78280), (304, 65405), (380, 52324), (412, 48260), (508, 39140), (515, 38608), (635, 31312), (760, 26162), (824, 24130), (1016, 19570), (1030, 19304), (1270, 15656), (1520, 13081), (1648, 12065), (1957, 10160), (2032, 9785), (2060, 9652), (2413, 8240), (2540, 7828), (3914, 5080), (4120, 4826)]