20518290

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:129

約数の個数: 144

約数和(自身を含む): 61663680

約数和(自身を除く): 41145390

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 19, 26, 30, 38, 39, 45, 57, 65, 71, 78, 90, 95, 114, 117, 130, 142, 169, 171, 190, 195, 213, 234, 247, 285, 338, 342, 355, 390, 426, 494, 507, 570, 585, 639, 710, 741, 845, 855, 923, 1014, 1065, 1170, 1235, 1278, 1349, 1482, 1521, 1690, 1710, 1846, 2130, 2223, 2470, 2535, 2698, 2769, 3042, 3195, 3211, 3705, 4047, 4446, 4615, 5070, 5538, 6390, 6422, 6745, 7410, 7605, 8094, 8307, 9230, 9633, 11115, 11999, 12141, 13490, 13845, 15210, 16055, 16614, 17537, 19266, 20235, 22230, 23998, 24282, 27690, 28899, 32110, 35074, 35997, 40470, 41535, 48165, 52611, 57798, 59995, 60705, 71994, 83070, 87685, 96330, 105222, 107991, 119990, 121410, 144495, 157833, 175370, 179985, 215982, 227981, 263055, 288990, 315666, 359970, 455962, 526110, 539955, 683943, 789165, 1079910, 1139905, 1367886, 1578330, 2051829, 2279810, 3419715, 4103658, 6839430, 10259145, 20518290]

約数ペア:

[(1, 20518290), (2, 10259145), (3, 6839430), (5, 4103658), (6, 3419715), (9, 2279810), (10, 2051829), (13, 1578330), (15, 1367886), (18, 1139905), (19, 1079910), (26, 789165), (30, 683943), (38, 539955), (39, 526110), (45, 455962), (57, 359970), (65, 315666), (71, 288990), (78, 263055), (90, 227981), (95, 215982), (114, 179985), (117, 175370), (130, 157833), (142, 144495), (169, 121410), (171, 119990), (190, 107991), (195, 105222), (213, 96330), (234, 87685), (247, 83070), (285, 71994), (338, 60705), (342, 59995), (355, 57798), (390, 52611), (426, 48165), (494, 41535), (507, 40470), (570, 35997), (585, 35074), (639, 32110), (710, 28899), (741, 27690), (845, 24282), (855, 23998), (923, 22230), (1014, 20235), (1065, 19266), (1170, 17537), (1235, 16614), (1278, 16055), (1349, 15210), (1482, 13845), (1521, 13490), (1690, 12141), (1710, 11999), (1846, 11115), (2130, 9633), (2223, 9230), (2470, 8307), (2535, 8094), (2698, 7605), (2769, 7410), (3042, 6745), (3195, 6422), (3211, 6390), (3705, 5538), (4047, 5070), (4446, 4615)]