21000339380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1493623}}^1$

素因数の和:1493688

約数の個数: 48

約数和(自身を含む): 47676478080

約数和(自身を除く): 26676138700

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 703, 740, 1406, 2812, 3515, 7030, 14060, 1493623, 2987246, 5974492, 7468115, 14936230, 28378837, 29872460, 55264051, 56757674, 110528102, 113515348, 141894185, 221056204, 276320255, 283788370, 552640510, 567576740, 1050016969, 1105281020, 2100033938, 4200067876, 5250084845, 10500169690, 21000339380]

約数ペア:

[(1, 21000339380), (2, 10500169690), (4, 5250084845), (5, 4200067876), (10, 2100033938), (19, 1105281020), (20, 1050016969), (37, 567576740), (38, 552640510), (74, 283788370), (76, 276320255), (95, 221056204), (148, 141894185), (185, 113515348), (190, 110528102), (370, 56757674), (380, 55264051), (703, 29872460), (740, 28378837), (1406, 14936230), (2812, 7468115), (3515, 5974492), (7030, 2987246), (14060, 1493623)]