21290032

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1187}}^1$

素因数の和:1273

約数の個数: 40

約数和(自身を含む): 44193600

約数和(自身を除く): 22903568

約数列:

[1, 2, 4, 8, 16, 19, 38, 59, 76, 118, 152, 236, 304, 472, 944, 1121, 1187, 2242, 2374, 4484, 4748, 8968, 9496, 17936, 18992, 22553, 45106, 70033, 90212, 140066, 180424, 280132, 360848, 560264, 1120528, 1330627, 2661254, 5322508, 10645016, 21290032]

約数ペア:

[(1, 21290032), (2, 10645016), (4, 5322508), (8, 2661254), (16, 1330627), (19, 1120528), (38, 560264), (59, 360848), (76, 280132), (118, 180424), (152, 140066), (236, 90212), (304, 70033), (472, 45106), (944, 22553), (1121, 18992), (1187, 17936), (2242, 9496), (2374, 8968), (4484, 4748)]