161782020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{12659}}^1$

素因数の和:12745

約数の個数: 72

約数和(自身を含む): 497689920

約数和(自身を除く): 335907900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2556, 3195, 4260, 6390, 12659, 12780, 25318, 37977, 50636, 63295, 75954, 113931, 126590, 151908, 189885, 227862, 253180, 379770, 455724, 569655, 759540, 898789, 1139310, 1797578, 2278620, 2696367, 3595156, 4493945, 5392734, 8089101, 8987890, 10785468, 13481835, 16178202, 17975780, 26963670, 32356404, 40445505, 53927340, 80891010, 161782020]

約数ペア:

[(1, 161782020), (2, 80891010), (3, 53927340), (4, 40445505), (5, 32356404), (6, 26963670), (9, 17975780), (10, 16178202), (12, 13481835), (15, 10785468), (18, 8987890), (20, 8089101), (30, 5392734), (36, 4493945), (45, 3595156), (60, 2696367), (71, 2278620), (90, 1797578), (142, 1139310), (180, 898789), (213, 759540), (284, 569655), (355, 455724), (426, 379770), (639, 253180), (710, 227862), (852, 189885), (1065, 151908), (1278, 126590), (1420, 113931), (2130, 75954), (2556, 63295), (3195, 50636), (4260, 37977), (6390, 25318), (12659, 12780)]