404838640

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{220021}}^1$

素因数の和:220057

約数の個数: 40

約数和(自身を含む): 982178208

約数和(自身を除く): 577339568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 220021, 440042, 880084, 1100105, 1760168, 2200210, 3520336, 4400420, 5060483, 8800840, 10120966, 17601680, 20241932, 25302415, 40483864, 50604830, 80967728, 101209660, 202419320, 404838640]

約数ペア:

[(1, 404838640), (2, 202419320), (4, 101209660), (5, 80967728), (8, 50604830), (10, 40483864), (16, 25302415), (20, 20241932), (23, 17601680), (40, 10120966), (46, 8800840), (80, 5060483), (92, 4400420), (115, 3520336), (184, 2200210), (230, 1760168), (368, 1100105), (460, 880084), (920, 440042), (1840, 220021)]