21000398508

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{503317}}^1$

素因数の和:503407

約数の個数: 72

約数和(自身を含む): 56794403120

約数和(自身を除く): 35794004612

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 61, 76, 114, 122, 171, 183, 228, 244, 342, 366, 549, 684, 732, 1098, 1159, 2196, 2318, 3477, 4636, 6954, 10431, 13908, 20862, 41724, 503317, 1006634, 1509951, 2013268, 3019902, 4529853, 6039804, 9059706, 9563023, 18119412, 19126046, 28689069, 30702337, 38252092, 57378138, 61404674, 86067207, 92107011, 114756276, 122809348, 172134414, 184214022, 276321033, 344268828, 368428044, 552642066, 583344403, 1105284132, 1166688806, 1750033209, 2333377612, 3500066418, 5250099627, 7000132836, 10500199254, 21000398508]

約数ペア:

[(1, 21000398508), (2, 10500199254), (3, 7000132836), (4, 5250099627), (6, 3500066418), (9, 2333377612), (12, 1750033209), (18, 1166688806), (19, 1105284132), (36, 583344403), (38, 552642066), (57, 368428044), (61, 344268828), (76, 276321033), (114, 184214022), (122, 172134414), (171, 122809348), (183, 114756276), (228, 92107011), (244, 86067207), (342, 61404674), (366, 57378138), (549, 38252092), (684, 30702337), (732, 28689069), (1098, 19126046), (1159, 18119412), (2196, 9563023), (2318, 9059706), (3477, 6039804), (4636, 4529853), (6954, 3019902), (10431, 2013268), (13908, 1509951), (20862, 1006634), (41724, 503317)]