21747453

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2153}}^1$

素因数の和:2213

約数の個数: 32

約数和(自身を含む): 36669696

約数和(自身を除く): 14922243

約数列:

[1, 3, 7, 13, 21, 37, 39, 91, 111, 259, 273, 481, 777, 1443, 2153, 3367, 6459, 10101, 15071, 27989, 45213, 79661, 83967, 195923, 238983, 557627, 587769, 1035593, 1672881, 3106779, 7249151, 21747453]

約数ペア:

[(1, 21747453), (3, 7249151), (7, 3106779), (13, 1672881), (21, 1035593), (37, 587769), (39, 557627), (91, 238983), (111, 195923), (259, 83967), (273, 79661), (481, 45213), (777, 27989), (1443, 15071), (2153, 10101), (3367, 6459)]