18886980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{233}}^1$

素因数の和:445

約数の個数: 96

約数和(自身を含む): 61012224

約数和(自身を除く): 42125244

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 193, 210, 233, 386, 420, 466, 579, 699, 772, 932, 965, 1158, 1165, 1351, 1398, 1631, 1930, 2316, 2330, 2702, 2796, 2895, 3262, 3495, 3860, 4053, 4660, 4893, 5404, 5790, 6524, 6755, 6990, 8106, 8155, 9786, 11580, 13510, 13980, 16212, 16310, 19572, 20265, 24465, 27020, 32620, 40530, 44969, 48930, 81060, 89938, 97860, 134907, 179876, 224845, 269814, 314783, 449690, 539628, 629566, 674535, 899380, 944349, 1259132, 1349070, 1573915, 1888698, 2698140, 3147830, 3777396, 4721745, 6295660, 9443490, 18886980]

約数ペア:

[(1, 18886980), (2, 9443490), (3, 6295660), (4, 4721745), (5, 3777396), (6, 3147830), (7, 2698140), (10, 1888698), (12, 1573915), (14, 1349070), (15, 1259132), (20, 944349), (21, 899380), (28, 674535), (30, 629566), (35, 539628), (42, 449690), (60, 314783), (70, 269814), (84, 224845), (105, 179876), (140, 134907), (193, 97860), (210, 89938), (233, 81060), (386, 48930), (420, 44969), (466, 40530), (579, 32620), (699, 27020), (772, 24465), (932, 20265), (965, 19572), (1158, 16310), (1165, 16212), (1351, 13980), (1398, 13510), (1631, 11580), (1930, 9786), (2316, 8155), (2330, 8106), (2702, 6990), (2796, 6755), (2895, 6524), (3262, 5790), (3495, 5404), (3860, 4893), (4053, 4660)]