18739840

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:162

約数の個数: 128

約数和(自身を含む): 52876800

約数和(自身を除く): 34136960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 47, 56, 64, 70, 80, 89, 94, 112, 128, 140, 160, 178, 188, 224, 235, 280, 320, 329, 356, 376, 445, 448, 470, 560, 623, 640, 658, 712, 752, 890, 896, 940, 1120, 1246, 1316, 1424, 1504, 1645, 1780, 1880, 2240, 2492, 2632, 2848, 3008, 3115, 3290, 3560, 3760, 4183, 4480, 4984, 5264, 5696, 6016, 6230, 6580, 7120, 7520, 8366, 9968, 10528, 11392, 12460, 13160, 14240, 15040, 16732, 19936, 20915, 21056, 24920, 26320, 28480, 29281, 30080, 33464, 39872, 41830, 42112, 49840, 52640, 56960, 58562, 66928, 79744, 83660, 99680, 105280, 117124, 133856, 146405, 167320, 199360, 210560, 234248, 267712, 292810, 334640, 398720, 468496, 535424, 585620, 669280, 936992, 1171240, 1338560, 1873984, 2342480, 2677120, 3747968, 4684960, 9369920, 18739840]

約数ペア:

[(1, 18739840), (2, 9369920), (4, 4684960), (5, 3747968), (7, 2677120), (8, 2342480), (10, 1873984), (14, 1338560), (16, 1171240), (20, 936992), (28, 669280), (32, 585620), (35, 535424), (40, 468496), (47, 398720), (56, 334640), (64, 292810), (70, 267712), (80, 234248), (89, 210560), (94, 199360), (112, 167320), (128, 146405), (140, 133856), (160, 117124), (178, 105280), (188, 99680), (224, 83660), (235, 79744), (280, 66928), (320, 58562), (329, 56960), (356, 52640), (376, 49840), (445, 42112), (448, 41830), (470, 39872), (560, 33464), (623, 30080), (640, 29281), (658, 28480), (712, 26320), (752, 24920), (890, 21056), (896, 20915), (940, 19936), (1120, 16732), (1246, 15040), (1316, 14240), (1424, 13160), (1504, 12460), (1645, 11392), (1780, 10528), (1880, 9968), (2240, 8366), (2492, 7520), (2632, 7120), (2848, 6580), (3008, 6230), (3115, 6016), (3290, 5696), (3560, 5264), (3760, 4984), (4183, 4480)]