257761040

素因数分解:

$2^4\times 5^1\times {\mathrm{263}}^1\times {\mathrm{12251}}^1$

素因数の和:12527

約数の個数: 40

約数和(自身を含む): 601622208

約数和(自身を除く): 343861168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263, 526, 1052, 1315, 2104, 2630, 4208, 5260, 10520, 12251, 21040, 24502, 49004, 61255, 98008, 122510, 196016, 245020, 490040, 980080, 3222013, 6444026, 12888052, 16110065, 25776104, 32220130, 51552208, 64440260, 128880520, 257761040]

約数ペア:

[(1, 257761040), (2, 128880520), (4, 64440260), (5, 51552208), (8, 32220130), (10, 25776104), (16, 16110065), (20, 12888052), (40, 6444026), (80, 3222013), (263, 980080), (526, 490040), (1052, 245020), (1315, 196016), (2104, 122510), (2630, 98008), (4208, 61255), (5260, 49004), (10520, 24502), (12251, 21040)]