77817880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{39703}}^1$

素因数の和:39728

約数の個数: 48

約数和(自身を含む): 203681520

約数和(自身を除く): 125863640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 39703, 79406, 158812, 198515, 277921, 317624, 397030, 555842, 794060, 1111684, 1389605, 1588120, 1945447, 2223368, 2779210, 3890894, 5558420, 7781788, 9727235, 11116840, 15563576, 19454470, 38908940, 77817880]

約数ペア:

[(1, 77817880), (2, 38908940), (4, 19454470), (5, 15563576), (7, 11116840), (8, 9727235), (10, 7781788), (14, 5558420), (20, 3890894), (28, 2779210), (35, 2223368), (40, 1945447), (49, 1588120), (56, 1389605), (70, 1111684), (98, 794060), (140, 555842), (196, 397030), (245, 317624), (280, 277921), (392, 198515), (490, 158812), (980, 79406), (1960, 39703)]