18765700

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 43747200

約数和(自身を除く): 24981500

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 41, 46, 50, 82, 92, 100, 115, 164, 199, 205, 230, 398, 410, 460, 575, 796, 820, 943, 995, 1025, 1150, 1886, 1990, 2050, 2300, 3772, 3980, 4100, 4577, 4715, 4975, 8159, 9154, 9430, 9950, 16318, 18308, 18860, 19900, 22885, 23575, 32636, 40795, 45770, 47150, 81590, 91540, 94300, 114425, 163180, 187657, 203975, 228850, 375314, 407950, 457700, 750628, 815900, 938285, 1876570, 3753140, 4691425, 9382850, 18765700]

約数ペア:

[(1, 18765700), (2, 9382850), (4, 4691425), (5, 3753140), (10, 1876570), (20, 938285), (23, 815900), (25, 750628), (41, 457700), (46, 407950), (50, 375314), (82, 228850), (92, 203975), (100, 187657), (115, 163180), (164, 114425), (199, 94300), (205, 91540), (230, 81590), (398, 47150), (410, 45770), (460, 40795), (575, 32636), (796, 23575), (820, 22885), (943, 19900), (995, 18860), (1025, 18308), (1150, 16318), (1886, 9950), (1990, 9430), (2050, 9154), (2300, 8159), (3772, 4975), (3980, 4715), (4100, 4577)]