51721276990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{81031}}^1$

素因数の和:81169

約数の個数: 64

約数和(自身を含む): 100816773120

約数和(自身を除く): 49095496130

約数列:

[1, 2, 5, 10, 29, 31, 58, 62, 71, 142, 145, 155, 290, 310, 355, 710, 899, 1798, 2059, 2201, 4118, 4402, 4495, 8990, 10295, 11005, 20590, 22010, 63829, 81031, 127658, 162062, 319145, 405155, 638290, 810310, 2349899, 2511961, 4699798, 5023922, 5753201, 11506402, 11749495, 12559805, 23498990, 25119610, 28766005, 57532010, 72846869, 145693738, 166842829, 178349231, 333685658, 356698462, 364234345, 728468690, 834214145, 891746155, 1668428290, 1783492310, 5172127699, 10344255398, 25860638495, 51721276990]

約数ペア:

[(1, 51721276990), (2, 25860638495), (5, 10344255398), (10, 5172127699), (29, 1783492310), (31, 1668428290), (58, 891746155), (62, 834214145), (71, 728468690), (142, 364234345), (145, 356698462), (155, 333685658), (290, 178349231), (310, 166842829), (355, 145693738), (710, 72846869), (899, 57532010), (1798, 28766005), (2059, 25119610), (2201, 23498990), (4118, 12559805), (4402, 11749495), (4495, 11506402), (8990, 5753201), (10295, 5023922), (11005, 4699798), (20590, 2511961), (22010, 2349899), (63829, 810310), (81031, 638290), (127658, 405155), (162062, 319145)]