18519720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{983}}^1$

素因数の和:1154

約数の個数: 64

約数和(自身を含む): 55969920

約数和(自身を除く): 37450200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 157, 314, 471, 628, 785, 942, 983, 1256, 1570, 1884, 1966, 2355, 2949, 3140, 3768, 3932, 4710, 4915, 5898, 6280, 7864, 9420, 9830, 11796, 14745, 18840, 19660, 23592, 29490, 39320, 58980, 117960, 154331, 308662, 462993, 617324, 771655, 925986, 1234648, 1543310, 1851972, 2314965, 3086620, 3703944, 4629930, 6173240, 9259860, 18519720]

約数ペア:

[(1, 18519720), (2, 9259860), (3, 6173240), (4, 4629930), (5, 3703944), (6, 3086620), (8, 2314965), (10, 1851972), (12, 1543310), (15, 1234648), (20, 925986), (24, 771655), (30, 617324), (40, 462993), (60, 308662), (120, 154331), (157, 117960), (314, 58980), (471, 39320), (628, 29490), (785, 23592), (942, 19660), (983, 18840), (1256, 14745), (1570, 11796), (1884, 9830), (1966, 9420), (2355, 7864), (2949, 6280), (3140, 5898), (3768, 4915), (3932, 4710)]