21321304

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{577}}^1$

素因数の和:763

約数の個数: 32

約数和(自身を含む): 41616000

約数和(自身を除く): 20294696

約数列:

[1, 2, 4, 8, 31, 62, 124, 149, 248, 298, 577, 596, 1154, 1192, 2308, 4616, 4619, 9238, 17887, 18476, 35774, 36952, 71548, 85973, 143096, 171946, 343892, 687784, 2665163, 5330326, 10660652, 21321304]

約数ペア:

[(1, 21321304), (2, 10660652), (4, 5330326), (8, 2665163), (31, 687784), (62, 343892), (124, 171946), (149, 143096), (248, 85973), (298, 71548), (577, 36952), (596, 35774), (1154, 18476), (1192, 17887), (2308, 9238), (4616, 4619)]