18879805

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 27141120

約数和(自身を除く): 8261315

約数列:

[1, 5, 7, 35, 37, 61, 185, 239, 259, 305, 427, 1195, 1295, 1673, 2135, 2257, 8365, 8843, 11285, 14579, 15799, 44215, 61901, 72895, 78995, 102053, 309505, 510265, 539423, 2697115, 3775961, 18879805]

約数ペア:

[(1, 18879805), (5, 3775961), (7, 2697115), (35, 539423), (37, 510265), (61, 309505), (185, 102053), (239, 78995), (259, 72895), (305, 61901), (427, 44215), (1195, 15799), (1295, 14579), (1673, 11285), (2135, 8843), (2257, 8365)]