21262533985

素因数分解:

$5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{4159}}^1$

素因数の和:4467

約数の個数: 64

約数和(自身を含む): 32587776000

約数和(自身を除く): 11325242015

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 271, 343, 385, 539, 1355, 1715, 1897, 2695, 2981, 3773, 4159, 9485, 13279, 14905, 18865, 20795, 20867, 29113, 45749, 66395, 92953, 104335, 145565, 146069, 203791, 228745, 320243, 464765, 730345, 1018955, 1022483, 1127089, 1426537, 1601215, 2241701, 5112415, 5635445, 7132685, 7889623, 11208505, 12397979, 15691907, 39448115, 55227361, 61989895, 78459535, 86785853, 276136805, 386591527, 433929265, 607500971, 1932957635, 3037504855, 4252506797, 21262533985]

約数ペア:

[(1, 21262533985), (5, 4252506797), (7, 3037504855), (11, 1932957635), (35, 607500971), (49, 433929265), (55, 386591527), (77, 276136805), (245, 86785853), (271, 78459535), (343, 61989895), (385, 55227361), (539, 39448115), (1355, 15691907), (1715, 12397979), (1897, 11208505), (2695, 7889623), (2981, 7132685), (3773, 5635445), (4159, 5112415), (9485, 2241701), (13279, 1601215), (14905, 1426537), (18865, 1127089), (20795, 1022483), (20867, 1018955), (29113, 730345), (45749, 464765), (66395, 320243), (92953, 228745), (104335, 203791), (145565, 146069)]