21003801

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{379}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 36388800

約数和(自身を除く): 15384999

約数列:

[1, 3, 7, 13, 21, 29, 39, 49, 87, 91, 147, 203, 273, 377, 379, 609, 637, 1131, 1137, 1421, 1911, 2639, 2653, 4263, 4927, 7917, 7959, 10991, 14781, 18473, 18571, 32973, 34489, 55419, 55713, 76937, 103467, 142883, 230811, 241423, 428649, 538559, 724269, 1000181, 1615677, 3000543, 7001267, 21003801]

約数ペア:

[(1, 21003801), (3, 7001267), (7, 3000543), (13, 1615677), (21, 1000181), (29, 724269), (39, 538559), (49, 428649), (87, 241423), (91, 230811), (147, 142883), (203, 103467), (273, 76937), (377, 55713), (379, 55419), (609, 34489), (637, 32973), (1131, 18571), (1137, 18473), (1421, 14781), (1911, 10991), (2639, 7959), (2653, 7917), (4263, 4927)]