77784560

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19843}}^1$

素因数の和:19870

約数の個数: 60

約数和(自身を含む): 210386088

約数和(自身を除く): 132601528

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 19843, 39686, 79372, 99215, 138901, 158744, 198430, 277802, 317488, 396860, 555604, 694505, 793720, 972307, 1111208, 1389010, 1587440, 1944614, 2222416, 2778020, 3889228, 4861535, 5556040, 7778456, 9723070, 11112080, 15556912, 19446140, 38892280, 77784560]

約数ペア:

[(1, 77784560), (2, 38892280), (4, 19446140), (5, 15556912), (7, 11112080), (8, 9723070), (10, 7778456), (14, 5556040), (16, 4861535), (20, 3889228), (28, 2778020), (35, 2222416), (40, 1944614), (49, 1587440), (56, 1389010), (70, 1111208), (80, 972307), (98, 793720), (112, 694505), (140, 555604), (196, 396860), (245, 317488), (280, 277802), (392, 198430), (490, 158744), (560, 138901), (784, 99215), (980, 79372), (1960, 39686), (3920, 19843)]