18640566

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{619}}^1$

素因数の和:873

約数の個数: 48

約数和(自身を含む): 46425600

約数和(自身を除く): 27785034

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 239, 478, 619, 717, 1238, 1434, 1673, 1857, 2151, 3346, 3714, 4302, 4333, 5019, 5571, 8666, 10038, 11142, 12999, 15057, 25998, 30114, 38997, 77994, 147941, 295882, 443823, 887646, 1035587, 1331469, 2071174, 2662938, 3106761, 6213522, 9320283, 18640566]

約数ペア:

[(1, 18640566), (2, 9320283), (3, 6213522), (6, 3106761), (7, 2662938), (9, 2071174), (14, 1331469), (18, 1035587), (21, 887646), (42, 443823), (63, 295882), (126, 147941), (239, 77994), (478, 38997), (619, 30114), (717, 25998), (1238, 15057), (1434, 12999), (1673, 11142), (1857, 10038), (2151, 8666), (3346, 5571), (3714, 5019), (4302, 4333)]