18407428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 37757440

約数和(自身を除く): 19350012

約数列:

[1, 2, 4, 13, 19, 26, 31, 38, 52, 62, 76, 124, 247, 403, 494, 589, 601, 806, 988, 1178, 1202, 1612, 2356, 2404, 7657, 7813, 11419, 15314, 15626, 18631, 22838, 30628, 31252, 37262, 45676, 74524, 148447, 242203, 296894, 353989, 484406, 593788, 707978, 968812, 1415956, 4601857, 9203714, 18407428]

約数ペア:

[(1, 18407428), (2, 9203714), (4, 4601857), (13, 1415956), (19, 968812), (26, 707978), (31, 593788), (38, 484406), (52, 353989), (62, 296894), (76, 242203), (124, 148447), (247, 74524), (403, 45676), (494, 37262), (589, 31252), (601, 30628), (806, 22838), (988, 18631), (1178, 15626), (1202, 15314), (1612, 11419), (2356, 7813), (2404, 7657)]