21131708439

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1\times {\mathrm{17921}}^1$

素因数の和:18231

約数の個数: 32

約数和(自身を含む): 30074549760

約数和(自身を除く): 8942841321

約数列:

[1, 3, 19, 57, 137, 151, 411, 453, 2603, 2869, 7809, 8607, 17921, 20687, 53763, 62061, 340499, 393053, 1021497, 1179159, 2455177, 2706071, 7365531, 8118213, 46648363, 51415349, 139945089, 154246047, 370731727, 1112195181, 7043902813, 21131708439]

約数ペア:

[(1, 21131708439), (3, 7043902813), (19, 1112195181), (57, 370731727), (137, 154246047), (151, 139945089), (411, 51415349), (453, 46648363), (2603, 8118213), (2869, 7365531), (7809, 2706071), (8607, 2455177), (17921, 1179159), (20687, 1021497), (53763, 393053), (62061, 340499)]