71237380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1291}}^1$

素因数の和:1420

約数の個数: 48

約数和(自身を含む): 156280320

約数和(自身を除く): 85042940

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1291, 1780, 2582, 2759, 5164, 5518, 6455, 11036, 12910, 13795, 25820, 27590, 40021, 55180, 80042, 114899, 160084, 200105, 229798, 400210, 459596, 574495, 800420, 1148990, 2297980, 3561869, 7123738, 14247476, 17809345, 35618690, 71237380]

約数ペア:

[(1, 71237380), (2, 35618690), (4, 17809345), (5, 14247476), (10, 7123738), (20, 3561869), (31, 2297980), (62, 1148990), (89, 800420), (124, 574495), (155, 459596), (178, 400210), (310, 229798), (356, 200105), (445, 160084), (620, 114899), (890, 80042), (1291, 55180), (1780, 40021), (2582, 27590), (2759, 25820), (5164, 13795), (5518, 12910), (6455, 11036)]