257183440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103703}}^1$

素因数の和:103747

約数の個数: 40

約数和(自身を含む): 617246208

約数和(自身を除く): 360062768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 103703, 207406, 414812, 518515, 829624, 1037030, 1659248, 2074060, 3214793, 4148120, 6429586, 8296240, 12859172, 16073965, 25718344, 32147930, 51436688, 64295860, 128591720, 257183440]

約数ペア:

[(1, 257183440), (2, 128591720), (4, 64295860), (5, 51436688), (8, 32147930), (10, 25718344), (16, 16073965), (20, 12859172), (31, 8296240), (40, 6429586), (62, 4148120), (80, 3214793), (124, 2074060), (155, 1659248), (248, 1037030), (310, 829624), (496, 518515), (620, 414812), (1240, 207406), (2480, 103703)]