20921720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{22741}}^1$

素因数の和:22775

約数の個数: 32

約数和(自身を含む): 49122720

約数和(自身を除く): 28201000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 22741, 45482, 90964, 113705, 181928, 227410, 454820, 523043, 909640, 1046086, 2092172, 2615215, 4184344, 5230430, 10460860, 20921720]

約数ペア:

[(1, 20921720), (2, 10460860), (4, 5230430), (5, 4184344), (8, 2615215), (10, 2092172), (20, 1046086), (23, 909640), (40, 523043), (46, 454820), (92, 227410), (115, 181928), (184, 113705), (230, 90964), (460, 45482), (920, 22741)]