20512247236

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{139}}^1\times {\mathrm{419}}^1\times {\mathrm{521}}^1$

素因数の和:1109

約数の個数: 72

約数和(自身を含む): 39318501600

約数和(自身を除く): 18806254364

約数列:

[1, 2, 4, 13, 26, 52, 139, 169, 278, 338, 419, 521, 556, 676, 838, 1042, 1676, 1807, 2084, 3614, 5447, 6773, 7228, 10894, 13546, 21788, 23491, 27092, 46982, 58241, 70811, 72419, 88049, 93964, 116482, 141622, 144838, 176098, 218299, 232964, 283244, 289676, 352196, 436598, 757133, 873196, 941447, 1514266, 1882894, 2837887, 3028532, 3765788, 5675774, 9842729, 11351548, 12238811, 19685458, 24477622, 30343561, 36892531, 39370916, 48955244, 60687122, 73785062, 121374244, 147570124, 394466293, 788932586, 1577865172, 5128061809, 10256123618, 20512247236]

約数ペア:

[(1, 20512247236), (2, 10256123618), (4, 5128061809), (13, 1577865172), (26, 788932586), (52, 394466293), (139, 147570124), (169, 121374244), (278, 73785062), (338, 60687122), (419, 48955244), (521, 39370916), (556, 36892531), (676, 30343561), (838, 24477622), (1042, 19685458), (1676, 12238811), (1807, 11351548), (2084, 9842729), (3614, 5675774), (5447, 3765788), (6773, 3028532), (7228, 2837887), (10894, 1882894), (13546, 1514266), (21788, 941447), (23491, 873196), (27092, 757133), (46982, 436598), (58241, 352196), (70811, 289676), (72419, 283244), (88049, 232964), (93964, 218299), (116482, 176098), (141622, 144838)]