20405130

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{593}}^1$

素因数の和:671

約数の個数: 64

約数和(自身を含む): 52005888

約数和(自身を除く): 31600758

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 37, 62, 74, 93, 111, 155, 185, 186, 222, 310, 370, 465, 555, 593, 930, 1110, 1147, 1186, 1779, 2294, 2965, 3441, 3558, 5735, 5930, 6882, 8895, 11470, 17205, 17790, 18383, 21941, 34410, 36766, 43882, 55149, 65823, 91915, 109705, 110298, 131646, 183830, 219410, 275745, 329115, 551490, 658230, 680171, 1360342, 2040513, 3400855, 4081026, 6801710, 10202565, 20405130]

約数ペア:

[(1, 20405130), (2, 10202565), (3, 6801710), (5, 4081026), (6, 3400855), (10, 2040513), (15, 1360342), (30, 680171), (31, 658230), (37, 551490), (62, 329115), (74, 275745), (93, 219410), (111, 183830), (155, 131646), (185, 110298), (186, 109705), (222, 91915), (310, 65823), (370, 55149), (465, 43882), (555, 36766), (593, 34410), (930, 21941), (1110, 18383), (1147, 17790), (1186, 17205), (1779, 11470), (2294, 8895), (2965, 6882), (3441, 5930), (3558, 5735)]