18903378

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:339

約数の個数: 64

約数和(自身を含む): 43690752

約数和(自身を除く): 24787374

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 41, 46, 69, 78, 82, 123, 138, 246, 257, 299, 514, 533, 598, 771, 897, 943, 1066, 1542, 1599, 1794, 1886, 2829, 3198, 3341, 5658, 5911, 6682, 10023, 10537, 11822, 12259, 17733, 20046, 21074, 24518, 31611, 35466, 36777, 63222, 73554, 76843, 136981, 153686, 230529, 242351, 273962, 410943, 461058, 484702, 727053, 821886, 1454106, 3150563, 6301126, 9451689, 18903378]

約数ペア:

[(1, 18903378), (2, 9451689), (3, 6301126), (6, 3150563), (13, 1454106), (23, 821886), (26, 727053), (39, 484702), (41, 461058), (46, 410943), (69, 273962), (78, 242351), (82, 230529), (123, 153686), (138, 136981), (246, 76843), (257, 73554), (299, 63222), (514, 36777), (533, 35466), (598, 31611), (771, 24518), (897, 21074), (943, 20046), (1066, 17733), (1542, 12259), (1599, 11822), (1794, 10537), (1886, 10023), (2829, 6682), (3198, 5911), (3341, 5658)]