638444628

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{19727}}^1$

素因数の和:19797

約数の個数: 72

約数和(自身を含む): 1723438080

約数和(自身を除く): 1084993452

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 31, 36, 58, 62, 87, 93, 116, 124, 174, 186, 261, 279, 348, 372, 522, 558, 899, 1044, 1116, 1798, 2697, 3596, 5394, 8091, 10788, 16182, 19727, 32364, 39454, 59181, 78908, 118362, 177543, 236724, 355086, 572083, 611537, 710172, 1144166, 1223074, 1716249, 1834611, 2288332, 2446148, 3432498, 3669222, 5148747, 5503833, 6864996, 7338444, 10297494, 11007666, 17734573, 20594988, 22015332, 35469146, 53203719, 70938292, 106407438, 159611157, 212814876, 319222314, 638444628]

約数ペア:

[(1, 638444628), (2, 319222314), (3, 212814876), (4, 159611157), (6, 106407438), (9, 70938292), (12, 53203719), (18, 35469146), (29, 22015332), (31, 20594988), (36, 17734573), (58, 11007666), (62, 10297494), (87, 7338444), (93, 6864996), (116, 5503833), (124, 5148747), (174, 3669222), (186, 3432498), (261, 2446148), (279, 2288332), (348, 1834611), (372, 1716249), (522, 1223074), (558, 1144166), (899, 710172), (1044, 611537), (1116, 572083), (1798, 355086), (2697, 236724), (3596, 177543), (5394, 118362), (8091, 78908), (10788, 59181), (16182, 39454), (19727, 32364)]