21630189

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2357}}^1$

素因数の和:2409

約数の個数: 32

約数和(自身を含む): 36218880

約数和(自身を除く): 14588691

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 2357, 3059, 7071, 9177, 16499, 44783, 49497, 54211, 134349, 162633, 313481, 379477, 940443, 1030009, 1138431, 3090027, 7210063, 21630189]

約数ペア:

[(1, 21630189), (3, 7210063), (7, 3090027), (19, 1138431), (21, 1030009), (23, 940443), (57, 379477), (69, 313481), (133, 162633), (161, 134349), (399, 54211), (437, 49497), (483, 44783), (1311, 16499), (2357, 9177), (3059, 7071)]