128996420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:202

約数の個数: 144

約数和(自身を含む): 337841280

約数和(自身を除く): 208844860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 59, 70, 92, 97, 98, 115, 118, 140, 161, 194, 196, 230, 236, 245, 295, 322, 388, 413, 460, 485, 490, 590, 644, 679, 805, 826, 970, 980, 1127, 1180, 1357, 1358, 1610, 1652, 1940, 2065, 2231, 2254, 2714, 2716, 2891, 3220, 3395, 4130, 4462, 4508, 4753, 5428, 5635, 5723, 5782, 6785, 6790, 8260, 8924, 9499, 9506, 11155, 11270, 11446, 11564, 13570, 13580, 14455, 15617, 18998, 19012, 22310, 22540, 22892, 23765, 27140, 28615, 28910, 31234, 37996, 40061, 44620, 47495, 47530, 57230, 57820, 62468, 66493, 78085, 80122, 94990, 95060, 109319, 114460, 131629, 132986, 156170, 160244, 189980, 200305, 218638, 263258, 265972, 280427, 312340, 332465, 400610, 437276, 526516, 546595, 560854, 658145, 664930, 801220, 921403, 1093190, 1121708, 1316290, 1329860, 1402135, 1842806, 2186380, 2632580, 2804270, 3685612, 4607015, 5608540, 6449821, 9214030, 12899642, 18428060, 25799284, 32249105, 64498210, 128996420]

約数ペア:

[(1, 128996420), (2, 64498210), (4, 32249105), (5, 25799284), (7, 18428060), (10, 12899642), (14, 9214030), (20, 6449821), (23, 5608540), (28, 4607015), (35, 3685612), (46, 2804270), (49, 2632580), (59, 2186380), (70, 1842806), (92, 1402135), (97, 1329860), (98, 1316290), (115, 1121708), (118, 1093190), (140, 921403), (161, 801220), (194, 664930), (196, 658145), (230, 560854), (236, 546595), (245, 526516), (295, 437276), (322, 400610), (388, 332465), (413, 312340), (460, 280427), (485, 265972), (490, 263258), (590, 218638), (644, 200305), (679, 189980), (805, 160244), (826, 156170), (970, 132986), (980, 131629), (1127, 114460), (1180, 109319), (1357, 95060), (1358, 94990), (1610, 80122), (1652, 78085), (1940, 66493), (2065, 62468), (2231, 57820), (2254, 57230), (2714, 47530), (2716, 47495), (2891, 44620), (3220, 40061), (3395, 37996), (4130, 31234), (4462, 28910), (4508, 28615), (4753, 27140), (5428, 23765), (5635, 22892), (5723, 22540), (5782, 22310), (6785, 19012), (6790, 18998), (8260, 15617), (8924, 14455), (9499, 13580), (9506, 13570), (11155, 11564), (11270, 11446)]