20506950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:446

約数の個数: 72

約数和(自身を含む): 55614000

約数和(自身を除く): 35107050

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150, 199, 225, 229, 398, 450, 458, 597, 687, 995, 1145, 1194, 1374, 1791, 1990, 2061, 2290, 2985, 3435, 3582, 4122, 4975, 5725, 5970, 6870, 8955, 9950, 10305, 11450, 14925, 17175, 17910, 20610, 29850, 34350, 44775, 45571, 51525, 89550, 91142, 103050, 136713, 227855, 273426, 410139, 455710, 683565, 820278, 1139275, 1367130, 2050695, 2278550, 3417825, 4101390, 6835650, 10253475, 20506950]

約数ペア:

[(1, 20506950), (2, 10253475), (3, 6835650), (5, 4101390), (6, 3417825), (9, 2278550), (10, 2050695), (15, 1367130), (18, 1139275), (25, 820278), (30, 683565), (45, 455710), (50, 410139), (75, 273426), (90, 227855), (150, 136713), (199, 103050), (225, 91142), (229, 89550), (398, 51525), (450, 45571), (458, 44775), (597, 34350), (687, 29850), (995, 20610), (1145, 17910), (1194, 17175), (1374, 14925), (1791, 11450), (1990, 10305), (2061, 9950), (2290, 8955), (2985, 6870), (3435, 5970), (3582, 5725), (4122, 4975)]