19713680

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:181

約数の個数: 120

約数和(自身を含む): 54960768

約数和(自身を除く): 35247088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 49, 56, 70, 80, 94, 98, 107, 112, 140, 188, 196, 214, 235, 245, 280, 329, 376, 392, 428, 470, 490, 535, 560, 658, 749, 752, 784, 856, 940, 980, 1070, 1316, 1498, 1645, 1712, 1880, 1960, 2140, 2303, 2632, 2996, 3290, 3745, 3760, 3920, 4280, 4606, 5029, 5243, 5264, 5992, 6580, 7490, 8560, 9212, 10058, 10486, 11515, 11984, 13160, 14980, 18424, 20116, 20972, 23030, 25145, 26215, 26320, 29960, 35203, 36848, 40232, 41944, 46060, 50290, 52430, 59920, 70406, 80464, 83888, 92120, 100580, 104860, 140812, 176015, 184240, 201160, 209720, 246421, 281624, 352030, 402320, 419440, 492842, 563248, 704060, 985684, 1232105, 1408120, 1971368, 2464210, 2816240, 3942736, 4928420, 9856840, 19713680]

約数ペア:

[(1, 19713680), (2, 9856840), (4, 4928420), (5, 3942736), (7, 2816240), (8, 2464210), (10, 1971368), (14, 1408120), (16, 1232105), (20, 985684), (28, 704060), (35, 563248), (40, 492842), (47, 419440), (49, 402320), (56, 352030), (70, 281624), (80, 246421), (94, 209720), (98, 201160), (107, 184240), (112, 176015), (140, 140812), (188, 104860), (196, 100580), (214, 92120), (235, 83888), (245, 80464), (280, 70406), (329, 59920), (376, 52430), (392, 50290), (428, 46060), (470, 41944), (490, 40232), (535, 36848), (560, 35203), (658, 29960), (749, 26320), (752, 26215), (784, 25145), (856, 23030), (940, 20972), (980, 20116), (1070, 18424), (1316, 14980), (1498, 13160), (1645, 11984), (1712, 11515), (1880, 10486), (1960, 10058), (2140, 9212), (2303, 8560), (2632, 7490), (2996, 6580), (3290, 5992), (3745, 5264), (3760, 5243), (3920, 5029), (4280, 4606)]