257398740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{26981}}^1$

素因数の和:27049

約数の個数: 72

約数和(自身を含む): 795537288

約数和(自身を除く): 538138548

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 53, 60, 90, 106, 159, 180, 212, 265, 318, 477, 530, 636, 795, 954, 1060, 1590, 1908, 2385, 3180, 4770, 9540, 26981, 53962, 80943, 107924, 134905, 161886, 242829, 269810, 323772, 404715, 485658, 539620, 809430, 971316, 1214145, 1429993, 1618860, 2428290, 2859986, 4289979, 4856580, 5719972, 7149965, 8579958, 12869937, 14299930, 17159916, 21449895, 25739874, 28599860, 42899790, 51479748, 64349685, 85799580, 128699370, 257398740]

約数ペア:

[(1, 257398740), (2, 128699370), (3, 85799580), (4, 64349685), (5, 51479748), (6, 42899790), (9, 28599860), (10, 25739874), (12, 21449895), (15, 17159916), (18, 14299930), (20, 12869937), (30, 8579958), (36, 7149965), (45, 5719972), (53, 4856580), (60, 4289979), (90, 2859986), (106, 2428290), (159, 1618860), (180, 1429993), (212, 1214145), (265, 971316), (318, 809430), (477, 539620), (530, 485658), (636, 404715), (795, 323772), (954, 269810), (1060, 242829), (1590, 161886), (1908, 134905), (2385, 107924), (3180, 80943), (4770, 53962), (9540, 26981)]