311930820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{28409}}^1$

素因数の和:28485

約数の個数: 72

約数和(自身を含む): 961735320

約数和(自身を除く): 649804500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 2196, 2745, 3660, 5490, 10980, 28409, 56818, 85227, 113636, 142045, 170454, 255681, 284090, 340908, 426135, 511362, 568180, 852270, 1022724, 1278405, 1704540, 1732949, 2556810, 3465898, 5113620, 5198847, 6931796, 8664745, 10397694, 15596541, 17329490, 20795388, 25994235, 31193082, 34658980, 51988470, 62386164, 77982705, 103976940, 155965410, 311930820]

約数ペア:

[(1, 311930820), (2, 155965410), (3, 103976940), (4, 77982705), (5, 62386164), (6, 51988470), (9, 34658980), (10, 31193082), (12, 25994235), (15, 20795388), (18, 17329490), (20, 15596541), (30, 10397694), (36, 8664745), (45, 6931796), (60, 5198847), (61, 5113620), (90, 3465898), (122, 2556810), (180, 1732949), (183, 1704540), (244, 1278405), (305, 1022724), (366, 852270), (549, 568180), (610, 511362), (732, 426135), (915, 340908), (1098, 284090), (1220, 255681), (1830, 170454), (2196, 142045), (2745, 113636), (3660, 85227), (5490, 56818), (10980, 28409)]