128963720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{104003}}^1$

素因数の和:104045

約数の個数: 32

約数和(自身を含む): 299531520

約数和(自身を除く): 170567800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 104003, 208006, 416012, 520015, 832024, 1040030, 2080060, 3224093, 4160120, 6448186, 12896372, 16120465, 25792744, 32240930, 64481860, 128963720]

約数ペア:

[(1, 128963720), (2, 64481860), (4, 32240930), (5, 25792744), (8, 16120465), (10, 12896372), (20, 6448186), (31, 4160120), (40, 3224093), (62, 2080060), (124, 1040030), (155, 832024), (248, 520015), (310, 416012), (620, 208006), (1240, 104003)]