21058988

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 20218612

約数列:

[1, 2, 4, 17, 29, 34, 58, 59, 68, 116, 118, 181, 236, 362, 493, 724, 986, 1003, 1711, 1972, 2006, 3077, 3422, 4012, 5249, 6154, 6844, 10498, 10679, 12308, 20996, 21358, 29087, 42716, 58174, 89233, 116348, 178466, 181543, 309691, 356932, 363086, 619382, 726172, 1238764, 5264747, 10529494, 21058988]

約数ペア:

[(1, 21058988), (2, 10529494), (4, 5264747), (17, 1238764), (29, 726172), (34, 619382), (58, 363086), (59, 356932), (68, 309691), (116, 181543), (118, 178466), (181, 116348), (236, 89233), (362, 58174), (493, 42716), (724, 29087), (986, 21358), (1003, 20996), (1711, 12308), (1972, 10679), (2006, 10498), (3077, 6844), (3422, 6154), (4012, 5249)]