19878978

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{859}}^1$

素因数の和:919

約数の個数: 64

約数和(自身を含む): 49536000

約数和(自身を除く): 29657022

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 29, 38, 42, 57, 58, 87, 114, 133, 174, 203, 266, 399, 406, 551, 609, 798, 859, 1102, 1218, 1653, 1718, 2577, 3306, 3857, 5154, 6013, 7714, 11571, 12026, 16321, 18039, 23142, 24911, 32642, 36078, 48963, 49822, 74733, 97926, 114247, 149466, 174377, 228494, 342741, 348754, 473309, 523131, 685482, 946618, 1046262, 1419927, 2839854, 3313163, 6626326, 9939489, 19878978]

約数ペア:

[(1, 19878978), (2, 9939489), (3, 6626326), (6, 3313163), (7, 2839854), (14, 1419927), (19, 1046262), (21, 946618), (29, 685482), (38, 523131), (42, 473309), (57, 348754), (58, 342741), (87, 228494), (114, 174377), (133, 149466), (174, 114247), (203, 97926), (266, 74733), (399, 49822), (406, 48963), (551, 36078), (609, 32642), (798, 24911), (859, 23142), (1102, 18039), (1218, 16321), (1653, 12026), (1718, 11571), (2577, 7714), (3306, 6013), (3857, 5154)]