129939920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{991}}^1$

素因数の和:1164

約数の個数: 80

約数和(自身を含む): 332121600

約数和(自身を除く): 202181680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 149, 176, 220, 298, 440, 596, 745, 880, 991, 1192, 1490, 1639, 1982, 2384, 2980, 3278, 3964, 4955, 5960, 6556, 7928, 8195, 9910, 10901, 11920, 13112, 15856, 16390, 19820, 21802, 26224, 32780, 39640, 43604, 54505, 65560, 79280, 87208, 109010, 131120, 147659, 174416, 218020, 295318, 436040, 590636, 738295, 872080, 1181272, 1476590, 1624249, 2362544, 2953180, 3248498, 5906360, 6496996, 8121245, 11812720, 12993992, 16242490, 25987984, 32484980, 64969960, 129939920]

約数ペア:

[(1, 129939920), (2, 64969960), (4, 32484980), (5, 25987984), (8, 16242490), (10, 12993992), (11, 11812720), (16, 8121245), (20, 6496996), (22, 5906360), (40, 3248498), (44, 2953180), (55, 2362544), (80, 1624249), (88, 1476590), (110, 1181272), (149, 872080), (176, 738295), (220, 590636), (298, 436040), (440, 295318), (596, 218020), (745, 174416), (880, 147659), (991, 131120), (1192, 109010), (1490, 87208), (1639, 79280), (1982, 65560), (2384, 54505), (2980, 43604), (3278, 39640), (3964, 32780), (4955, 26224), (5960, 21802), (6556, 19820), (7928, 16390), (8195, 15856), (9910, 13112), (10901, 11920)]