21190960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{479}}^1$

素因数の和:578

約数の個数: 80

約数和(自身を含む): 57139200

約数和(自身を除く): 35948240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 79, 80, 112, 140, 158, 280, 316, 395, 479, 553, 560, 632, 790, 958, 1106, 1264, 1580, 1916, 2212, 2395, 2765, 3160, 3353, 3832, 4424, 4790, 5530, 6320, 6706, 7664, 8848, 9580, 11060, 13412, 16765, 19160, 22120, 26824, 33530, 37841, 38320, 44240, 53648, 67060, 75682, 134120, 151364, 189205, 264887, 268240, 302728, 378410, 529774, 605456, 756820, 1059548, 1324435, 1513640, 2119096, 2648870, 3027280, 4238192, 5297740, 10595480, 21190960]

約数ペア:

[(1, 21190960), (2, 10595480), (4, 5297740), (5, 4238192), (7, 3027280), (8, 2648870), (10, 2119096), (14, 1513640), (16, 1324435), (20, 1059548), (28, 756820), (35, 605456), (40, 529774), (56, 378410), (70, 302728), (79, 268240), (80, 264887), (112, 189205), (140, 151364), (158, 134120), (280, 75682), (316, 67060), (395, 53648), (479, 44240), (553, 38320), (560, 37841), (632, 33530), (790, 26824), (958, 22120), (1106, 19160), (1264, 16765), (1580, 13412), (1916, 11060), (2212, 9580), (2395, 8848), (2765, 7664), (3160, 6706), (3353, 6320), (3832, 5530), (4424, 4790)]