78871380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:358

約数の個数: 144

約数和(自身を含む): 260084160

約数和(自身を除く): 181212780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 139, 140, 147, 193, 196, 210, 245, 278, 294, 386, 417, 420, 490, 556, 579, 588, 695, 735, 772, 834, 965, 973, 980, 1158, 1351, 1390, 1470, 1668, 1930, 1946, 2085, 2316, 2702, 2780, 2895, 2919, 2940, 3860, 3892, 4053, 4170, 4865, 5404, 5790, 5838, 6755, 6811, 8106, 8340, 9457, 9730, 11580, 11676, 13510, 13622, 14595, 16212, 18914, 19460, 20265, 20433, 26827, 27020, 27244, 28371, 29190, 34055, 37828, 40530, 40866, 47285, 53654, 56742, 58380, 68110, 80481, 81060, 81732, 94570, 102165, 107308, 113484, 134135, 136220, 141855, 160962, 187789, 189140, 204330, 268270, 283710, 321924, 375578, 402405, 408660, 536540, 563367, 567420, 751156, 804810, 938945, 1126734, 1314523, 1609620, 1877890, 2253468, 2629046, 2816835, 3755780, 3943569, 5258092, 5633670, 6572615, 7887138, 11267340, 13145230, 15774276, 19717845, 26290460, 39435690, 78871380]

約数ペア:

[(1, 78871380), (2, 39435690), (3, 26290460), (4, 19717845), (5, 15774276), (6, 13145230), (7, 11267340), (10, 7887138), (12, 6572615), (14, 5633670), (15, 5258092), (20, 3943569), (21, 3755780), (28, 2816835), (30, 2629046), (35, 2253468), (42, 1877890), (49, 1609620), (60, 1314523), (70, 1126734), (84, 938945), (98, 804810), (105, 751156), (139, 567420), (140, 563367), (147, 536540), (193, 408660), (196, 402405), (210, 375578), (245, 321924), (278, 283710), (294, 268270), (386, 204330), (417, 189140), (420, 187789), (490, 160962), (556, 141855), (579, 136220), (588, 134135), (695, 113484), (735, 107308), (772, 102165), (834, 94570), (965, 81732), (973, 81060), (980, 80481), (1158, 68110), (1351, 58380), (1390, 56742), (1470, 53654), (1668, 47285), (1930, 40866), (1946, 40530), (2085, 37828), (2316, 34055), (2702, 29190), (2780, 28371), (2895, 27244), (2919, 27020), (2940, 26827), (3860, 20433), (3892, 20265), (4053, 19460), (4170, 18914), (4865, 16212), (5404, 14595), (5790, 13622), (5838, 13510), (6755, 11676), (6811, 11580), (8106, 9730), (8340, 9457)]