21639568

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{313}}^1$

素因数の和:499

約数の個数: 40

約数和(自身を含む): 43803000

約数和(自身を除く): 22163432

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 149, 232, 298, 313, 464, 596, 626, 1192, 1252, 2384, 2504, 4321, 5008, 8642, 9077, 17284, 18154, 34568, 36308, 46637, 69136, 72616, 93274, 145232, 186548, 373096, 746192, 1352473, 2704946, 5409892, 10819784, 21639568]

約数ペア:

[(1, 21639568), (2, 10819784), (4, 5409892), (8, 2704946), (16, 1352473), (29, 746192), (58, 373096), (116, 186548), (149, 145232), (232, 93274), (298, 72616), (313, 69136), (464, 46637), (596, 36308), (626, 34568), (1192, 18154), (1252, 17284), (2384, 9077), (2504, 8642), (4321, 5008)]