18677895

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 30801600

約数和(自身を除く): 12123705

約数列:

[1, 3, 5, 15, 61, 137, 149, 183, 305, 411, 447, 685, 745, 915, 2055, 2235, 8357, 9089, 20413, 25071, 27267, 41785, 45445, 61239, 102065, 125355, 136335, 306195, 1245193, 3735579, 6225965, 18677895]

約数ペア:

[(1, 18677895), (3, 6225965), (5, 3735579), (15, 1245193), (61, 306195), (137, 136335), (149, 125355), (183, 102065), (305, 61239), (411, 45445), (447, 41785), (685, 27267), (745, 25071), (915, 20413), (2055, 9089), (2235, 8357)]