21781444612

素因数分解:

$2^2\times {\mathrm{157}}^1\times {\mathrm{659}}^1\times {\mathrm{52631}}^1$

素因数の和:53451

約数の個数: 24

約数和(自身を含む): 38419254720

約数和(自身を除く): 16637810108

約数列:

[1, 2, 4, 157, 314, 628, 659, 1318, 2636, 52631, 103463, 105262, 206926, 210524, 413852, 8263067, 16526134, 33052268, 34683829, 69367658, 138735316, 5445361153, 10890722306, 21781444612]

約数ペア:

[(1, 21781444612), (2, 10890722306), (4, 5445361153), (157, 138735316), (314, 69367658), (628, 34683829), (659, 33052268), (1318, 16526134), (2636, 8263067), (52631, 413852), (103463, 210524), (105262, 206926)]