20944840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 58982400

約数和(自身を除く): 38037560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 31, 35, 38, 40, 56, 62, 70, 76, 95, 124, 127, 133, 140, 152, 155, 190, 217, 248, 254, 266, 280, 310, 380, 434, 508, 532, 589, 620, 635, 665, 760, 868, 889, 1016, 1064, 1085, 1178, 1240, 1270, 1330, 1736, 1778, 2170, 2356, 2413, 2540, 2660, 2945, 3556, 3937, 4123, 4340, 4445, 4712, 4826, 5080, 5320, 5890, 7112, 7874, 8246, 8680, 8890, 9652, 11780, 12065, 15748, 16492, 16891, 17780, 19304, 19685, 20615, 23560, 24130, 27559, 31496, 32984, 33782, 35560, 39370, 41230, 48260, 55118, 67564, 74803, 78740, 82460, 84455, 96520, 110236, 135128, 137795, 149606, 157480, 164920, 168910, 220472, 275590, 299212, 337820, 374015, 523621, 551180, 598424, 675640, 748030, 1047242, 1102360, 1496060, 2094484, 2618105, 2992120, 4188968, 5236210, 10472420, 20944840]

約数ペア:

[(1, 20944840), (2, 10472420), (4, 5236210), (5, 4188968), (7, 2992120), (8, 2618105), (10, 2094484), (14, 1496060), (19, 1102360), (20, 1047242), (28, 748030), (31, 675640), (35, 598424), (38, 551180), (40, 523621), (56, 374015), (62, 337820), (70, 299212), (76, 275590), (95, 220472), (124, 168910), (127, 164920), (133, 157480), (140, 149606), (152, 137795), (155, 135128), (190, 110236), (217, 96520), (248, 84455), (254, 82460), (266, 78740), (280, 74803), (310, 67564), (380, 55118), (434, 48260), (508, 41230), (532, 39370), (589, 35560), (620, 33782), (635, 32984), (665, 31496), (760, 27559), (868, 24130), (889, 23560), (1016, 20615), (1064, 19685), (1085, 19304), (1178, 17780), (1240, 16891), (1270, 16492), (1330, 15748), (1736, 12065), (1778, 11780), (2170, 9652), (2356, 8890), (2413, 8680), (2540, 8246), (2660, 7874), (2945, 7112), (3556, 5890), (3937, 5320), (4123, 5080), (4340, 4826), (4445, 4712)]