128423720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139591}}^1$

素因数の和:139625

約数の個数: 32

約数和(自身を含む): 301518720

約数和(自身を除く): 173095000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 139591, 279182, 558364, 697955, 1116728, 1395910, 2791820, 3210593, 5583640, 6421186, 12842372, 16052965, 25684744, 32105930, 64211860, 128423720]

約数ペア:

[(1, 128423720), (2, 64211860), (4, 32105930), (5, 25684744), (8, 16052965), (10, 12842372), (20, 6421186), (23, 5583640), (40, 3210593), (46, 2791820), (92, 1395910), (115, 1116728), (184, 697955), (230, 558364), (460, 279182), (920, 139591)]