20953170

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:520

約数の個数: 96

約数和(自身を含む): 63198720

約数和(自身を除く): 42245550

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 79, 90, 105, 126, 158, 210, 237, 315, 395, 421, 474, 553, 630, 711, 790, 842, 1106, 1185, 1263, 1422, 1659, 2105, 2370, 2526, 2765, 2947, 3318, 3555, 3789, 4210, 4977, 5530, 5894, 6315, 7110, 7578, 8295, 8841, 9954, 12630, 14735, 16590, 17682, 18945, 24885, 26523, 29470, 33259, 37890, 44205, 49770, 53046, 66518, 88410, 99777, 132615, 166295, 199554, 232813, 265230, 299331, 332590, 465626, 498885, 598662, 698439, 997770, 1164065, 1396878, 1496655, 2095317, 2328130, 2993310, 3492195, 4190634, 6984390, 10476585, 20953170]

約数ペア:

[(1, 20953170), (2, 10476585), (3, 6984390), (5, 4190634), (6, 3492195), (7, 2993310), (9, 2328130), (10, 2095317), (14, 1496655), (15, 1396878), (18, 1164065), (21, 997770), (30, 698439), (35, 598662), (42, 498885), (45, 465626), (63, 332590), (70, 299331), (79, 265230), (90, 232813), (105, 199554), (126, 166295), (158, 132615), (210, 99777), (237, 88410), (315, 66518), (395, 53046), (421, 49770), (474, 44205), (553, 37890), (630, 33259), (711, 29470), (790, 26523), (842, 24885), (1106, 18945), (1185, 17682), (1263, 16590), (1422, 14735), (1659, 12630), (2105, 9954), (2370, 8841), (2526, 8295), (2765, 7578), (2947, 7110), (3318, 6315), (3555, 5894), (3789, 5530), (4210, 4977)]