20087788

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{619}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 43052800

約数和(自身を除く): 22965012

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 61, 76, 122, 133, 244, 266, 427, 532, 619, 854, 1159, 1238, 1708, 2318, 2476, 4333, 4636, 8113, 8666, 11761, 16226, 17332, 23522, 32452, 37759, 47044, 75518, 82327, 151036, 164654, 264313, 329308, 528626, 717421, 1057252, 1434842, 2869684, 5021947, 10043894, 20087788]

約数ペア:

[(1, 20087788), (2, 10043894), (4, 5021947), (7, 2869684), (14, 1434842), (19, 1057252), (28, 717421), (38, 528626), (61, 329308), (76, 264313), (122, 164654), (133, 151036), (244, 82327), (266, 75518), (427, 47044), (532, 37759), (619, 32452), (854, 23522), (1159, 17332), (1238, 16226), (1708, 11761), (2318, 8666), (2476, 8113), (4333, 4636)]