77767840

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15679}}^1$

素因数の和:15725

約数の個数: 48

約数和(自身を含む): 189665280

約数和(自身を除く): 111897440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 15679, 31358, 62716, 78395, 125432, 156790, 250864, 313580, 486049, 501728, 627160, 972098, 1254320, 1944196, 2430245, 2508640, 3888392, 4860490, 7776784, 9720980, 15553568, 19441960, 38883920, 77767840]

約数ペア:

[(1, 77767840), (2, 38883920), (4, 19441960), (5, 15553568), (8, 9720980), (10, 7776784), (16, 4860490), (20, 3888392), (31, 2508640), (32, 2430245), (40, 1944196), (62, 1254320), (80, 972098), (124, 627160), (155, 501728), (160, 486049), (248, 313580), (310, 250864), (496, 156790), (620, 125432), (992, 78395), (1240, 62716), (2480, 31358), (4960, 15679)]