20274520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:177

約数の個数: 128

約数和(自身を含む): 56908800

約数和(自身を除く): 36634280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 37, 38, 40, 56, 70, 74, 76, 95, 103, 133, 140, 148, 152, 185, 190, 206, 259, 266, 280, 296, 370, 380, 412, 515, 518, 532, 665, 703, 721, 740, 760, 824, 1030, 1036, 1064, 1295, 1330, 1406, 1442, 1480, 1957, 2060, 2072, 2590, 2660, 2812, 2884, 3515, 3605, 3811, 3914, 4120, 4921, 5180, 5320, 5624, 5768, 7030, 7210, 7622, 7828, 9785, 9842, 10360, 13699, 14060, 14420, 15244, 15656, 19055, 19570, 19684, 24605, 26677, 27398, 28120, 28840, 30488, 38110, 39140, 39368, 49210, 53354, 54796, 68495, 72409, 76220, 78280, 98420, 106708, 109592, 133385, 136990, 144818, 152440, 196840, 213416, 266770, 273980, 289636, 362045, 506863, 533540, 547960, 579272, 724090, 1013726, 1067080, 1448180, 2027452, 2534315, 2896360, 4054904, 5068630, 10137260, 20274520]

約数ペア:

[(1, 20274520), (2, 10137260), (4, 5068630), (5, 4054904), (7, 2896360), (8, 2534315), (10, 2027452), (14, 1448180), (19, 1067080), (20, 1013726), (28, 724090), (35, 579272), (37, 547960), (38, 533540), (40, 506863), (56, 362045), (70, 289636), (74, 273980), (76, 266770), (95, 213416), (103, 196840), (133, 152440), (140, 144818), (148, 136990), (152, 133385), (185, 109592), (190, 106708), (206, 98420), (259, 78280), (266, 76220), (280, 72409), (296, 68495), (370, 54796), (380, 53354), (412, 49210), (515, 39368), (518, 39140), (532, 38110), (665, 30488), (703, 28840), (721, 28120), (740, 27398), (760, 26677), (824, 24605), (1030, 19684), (1036, 19570), (1064, 19055), (1295, 15656), (1330, 15244), (1406, 14420), (1442, 14060), (1480, 13699), (1957, 10360), (2060, 9842), (2072, 9785), (2590, 7828), (2660, 7622), (2812, 7210), (2884, 7030), (3515, 5768), (3605, 5624), (3811, 5320), (3914, 5180), (4120, 4921)]