80966980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{3001}}^1$

素因数の和:3100

約数の個数: 48

約数和(自身を含む): 181560960

約数和(自身を除く): 100593980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 284, 355, 380, 710, 1349, 1420, 2698, 3001, 5396, 6002, 6745, 12004, 13490, 15005, 26980, 30010, 57019, 60020, 114038, 213071, 228076, 285095, 426142, 570190, 852284, 1065355, 1140380, 2130710, 4048349, 4261420, 8096698, 16193396, 20241745, 40483490, 80966980]

約数ペア:

[(1, 80966980), (2, 40483490), (4, 20241745), (5, 16193396), (10, 8096698), (19, 4261420), (20, 4048349), (38, 2130710), (71, 1140380), (76, 1065355), (95, 852284), (142, 570190), (190, 426142), (284, 285095), (355, 228076), (380, 213071), (710, 114038), (1349, 60020), (1420, 57019), (2698, 30010), (3001, 26980), (5396, 15005), (6002, 13490), (6745, 12004)]