21295728

素因数分解:

$2^4\times 3^2\times {\mathrm{41}}^1\times {\mathrm{3607}}^1$

素因数の和:3662

約数の個数: 60

約数和(自身を含む): 61069008

約数和(自身を除く): 39773280

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 41, 48, 72, 82, 123, 144, 164, 246, 328, 369, 492, 656, 738, 984, 1476, 1968, 2952, 3607, 5904, 7214, 10821, 14428, 21642, 28856, 32463, 43284, 57712, 64926, 86568, 129852, 147887, 173136, 259704, 295774, 443661, 519408, 591548, 887322, 1183096, 1330983, 1774644, 2366192, 2661966, 3549288, 5323932, 7098576, 10647864, 21295728]

約数ペア:

[(1, 21295728), (2, 10647864), (3, 7098576), (4, 5323932), (6, 3549288), (8, 2661966), (9, 2366192), (12, 1774644), (16, 1330983), (18, 1183096), (24, 887322), (36, 591548), (41, 519408), (48, 443661), (72, 295774), (82, 259704), (123, 173136), (144, 147887), (164, 129852), (246, 86568), (328, 64926), (369, 57712), (492, 43284), (656, 32463), (738, 28856), (984, 21642), (1476, 14428), (1968, 10821), (2952, 7214), (3607, 5904)]