21530420065

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{571}}^1\times {\mathrm{2647}}^1$

素因数の和:3278

約数の個数: 64

約数和(自身を含む): 33152790528

約数和(自身を除く): 11622370463

約数列:

[1, 5, 7, 11, 35, 37, 55, 77, 185, 259, 385, 407, 571, 1295, 2035, 2647, 2849, 2855, 3997, 6281, 13235, 14245, 18529, 19985, 21127, 29117, 31405, 43967, 92645, 97939, 105635, 145585, 147889, 203819, 219835, 232397, 489695, 685573, 739445, 1019095, 1077329, 1161985, 1511437, 1626779, 3427865, 5386645, 7541303, 7557185, 8133895, 10580059, 16625807, 37706515, 52900295, 55923169, 83129035, 116380649, 279615845, 391462183, 581903245, 615154859, 1957310915, 3075774295, 4306084013, 21530420065]

約数ペア:

[(1, 21530420065), (5, 4306084013), (7, 3075774295), (11, 1957310915), (35, 615154859), (37, 581903245), (55, 391462183), (77, 279615845), (185, 116380649), (259, 83129035), (385, 55923169), (407, 52900295), (571, 37706515), (1295, 16625807), (2035, 10580059), (2647, 8133895), (2849, 7557185), (2855, 7541303), (3997, 5386645), (6281, 3427865), (13235, 1626779), (14245, 1511437), (18529, 1161985), (19985, 1077329), (21127, 1019095), (29117, 739445), (31405, 685573), (43967, 489695), (92645, 232397), (97939, 219835), (105635, 203819), (145585, 147889)]