159997740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{54421}}^1$

素因数の和:54447

約数の個数: 72

約数和(自身を含む): 521145072

約数和(自身を除く): 361147332

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, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 54421, 108842, 163263, 217684, 272105, 326526, 380947, 544210, 653052, 761894, 816315, 1088420, 1142841, 1523788, 1632630, 1904735, 2285682, 2666629, 3265260, 3809470, 4571364, 5333258, 5714205, 7618940, 7999887, 10666516, 11428410, 13333145, 15999774, 22856820, 26666290, 31999548, 39999435, 53332580, 79998870, 159997740]

約数ペア:

[(1, 159997740), (2, 79998870), (3, 53332580), (4, 39999435), (5, 31999548), (6, 26666290), (7, 22856820), (10, 15999774), (12, 13333145), (14, 11428410), (15, 10666516), (20, 7999887), (21, 7618940), (28, 5714205), (30, 5333258), (35, 4571364), (42, 3809470), (49, 3265260), (60, 2666629), (70, 2285682), (84, 1904735), (98, 1632630), (105, 1523788), (140, 1142841), (147, 1088420), (196, 816315), (210, 761894), (245, 653052), (294, 544210), (420, 380947), (490, 326526), (588, 272105), (735, 217684), (980, 163263), (1470, 108842), (2940, 54421)]