21000339357

素因数分解:

$3^1\times {\mathrm{29}}^2\times {\mathrm{47}}^1\times {\mathrm{409}}^1\times {\mathrm{433}}^1$

素因数の和:950

約数の個数: 48

約数和(自身を含む): 29757262080

約数和(自身を除く): 8756922723

約数列:

[1, 3, 29, 47, 87, 141, 409, 433, 841, 1227, 1299, 1363, 2523, 4089, 11861, 12557, 19223, 20351, 35583, 37671, 39527, 57669, 61053, 118581, 177097, 343969, 364153, 531291, 557467, 590179, 1031907, 1092459, 1672401, 1770537, 5135813, 8323559, 15407439, 16166543, 17115191, 24970677, 48499629, 51345573, 148938577, 241383211, 446815731, 724149633, 7000113119, 21000339357]

約数ペア:

[(1, 21000339357), (3, 7000113119), (29, 724149633), (47, 446815731), (87, 241383211), (141, 148938577), (409, 51345573), (433, 48499629), (841, 24970677), (1227, 17115191), (1299, 16166543), (1363, 15407439), (2523, 8323559), (4089, 5135813), (11861, 1770537), (12557, 1672401), (19223, 1092459), (20351, 1031907), (35583, 590179), (37671, 557467), (39527, 531291), (57669, 364153), (61053, 343969), (118581, 177097)]