257003660

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{233}}^1\times {\mathrm{421}}^1$

素因数の和:794

約数の個数: 48

約数和(自身を含む): 547458912

約数和(自身を除く): 290455252

約数列:

[1, 2, 4, 5, 10, 20, 131, 233, 262, 421, 466, 524, 655, 842, 932, 1165, 1310, 1684, 2105, 2330, 2620, 4210, 4660, 8420, 30523, 55151, 61046, 98093, 110302, 122092, 152615, 196186, 220604, 275755, 305230, 392372, 490465, 551510, 610460, 980930, 1103020, 1961860, 12850183, 25700366, 51400732, 64250915, 128501830, 257003660]

約数ペア:

[(1, 257003660), (2, 128501830), (4, 64250915), (5, 51400732), (10, 25700366), (20, 12850183), (131, 1961860), (233, 1103020), (262, 980930), (421, 610460), (466, 551510), (524, 490465), (655, 392372), (842, 305230), (932, 275755), (1165, 220604), (1310, 196186), (1684, 152615), (2105, 122092), (2330, 110302), (2620, 98093), (4210, 61046), (4660, 55151), (8420, 30523)]