78221780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{42979}}^1$

素因数の和:43008

約数の個数: 48

約数和(自身を含む): 202177920

約数和(自身を除く): 123956140

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 42979, 85958, 171916, 214895, 300853, 429790, 558727, 601706, 859580, 1117454, 1203412, 1504265, 2234908, 2793635, 3008530, 3911089, 5587270, 6017060, 7822178, 11174540, 15644356, 19555445, 39110890, 78221780]

約数ペア:

[(1, 78221780), (2, 39110890), (4, 19555445), (5, 15644356), (7, 11174540), (10, 7822178), (13, 6017060), (14, 5587270), (20, 3911089), (26, 3008530), (28, 2793635), (35, 2234908), (52, 1504265), (65, 1203412), (70, 1117454), (91, 859580), (130, 601706), (140, 558727), (182, 429790), (260, 300853), (364, 214895), (455, 171916), (910, 85958), (1820, 42979)]