77777140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{17921}}^1$

素因数の和:17968

約数の個数: 48

約数和(自身を含む): 192697344

約数和(自身を除く): 114920204

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 17921, 35842, 71684, 89605, 125447, 179210, 250894, 358420, 501788, 555551, 627235, 1111102, 1254470, 2222204, 2508940, 2777755, 3888857, 5555510, 7777714, 11111020, 15555428, 19444285, 38888570, 77777140]

約数ペア:

[(1, 77777140), (2, 38888570), (4, 19444285), (5, 15555428), (7, 11111020), (10, 7777714), (14, 5555510), (20, 3888857), (28, 2777755), (31, 2508940), (35, 2222204), (62, 1254470), (70, 1111102), (124, 627235), (140, 555551), (155, 501788), (217, 358420), (310, 250894), (434, 179210), (620, 125447), (868, 89605), (1085, 71684), (2170, 35842), (4340, 17921)]