840347090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{1721}}^1$

素因数の和:1955

約数の個数: 64

約数和(自身を含む): 1731808512

約数和(自身を除く): 891461422

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 193, 230, 253, 386, 506, 965, 1265, 1721, 1930, 2123, 2530, 3442, 4246, 4439, 8605, 8878, 10615, 17210, 18931, 21230, 22195, 37862, 39583, 44390, 48829, 79166, 94655, 97658, 189310, 197915, 244145, 332153, 395830, 435413, 488290, 664306, 870826, 1660765, 2177065, 3321530, 3653683, 4354130, 7307366, 7639519, 15279038, 18268415, 36536830, 38197595, 76395190, 84034709, 168069418, 420173545, 840347090]

約数ペア:

[(1, 840347090), (2, 420173545), (5, 168069418), (10, 84034709), (11, 76395190), (22, 38197595), (23, 36536830), (46, 18268415), (55, 15279038), (110, 7639519), (115, 7307366), (193, 4354130), (230, 3653683), (253, 3321530), (386, 2177065), (506, 1660765), (965, 870826), (1265, 664306), (1721, 488290), (1930, 435413), (2123, 395830), (2530, 332153), (3442, 244145), (4246, 197915), (4439, 189310), (8605, 97658), (8878, 94655), (10615, 79166), (17210, 48829), (18931, 44390), (21230, 39583), (22195, 37862)]