20415888

素因数分解:

$2^4\times 3^5\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 60933600

約数和(自身を除く): 40517712

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 59, 72, 81, 89, 108, 118, 144, 162, 177, 178, 216, 236, 243, 267, 324, 354, 356, 432, 472, 486, 531, 534, 648, 708, 712, 801, 944, 972, 1062, 1068, 1296, 1416, 1424, 1593, 1602, 1944, 2124, 2136, 2403, 2832, 3186, 3204, 3888, 4248, 4272, 4779, 4806, 5251, 6372, 6408, 7209, 8496, 9558, 9612, 10502, 12744, 12816, 14337, 14418, 15753, 19116, 19224, 21004, 21627, 25488, 28674, 28836, 31506, 38232, 38448, 42008, 43254, 47259, 57348, 57672, 63012, 76464, 84016, 86508, 94518, 114696, 115344, 126024, 141777, 173016, 189036, 229392, 252048, 283554, 346032, 378072, 425331, 567108, 756144, 850662, 1134216, 1275993, 1701324, 2268432, 2551986, 3402648, 5103972, 6805296, 10207944, 20415888]

約数ペア:

[(1, 20415888), (2, 10207944), (3, 6805296), (4, 5103972), (6, 3402648), (8, 2551986), (9, 2268432), (12, 1701324), (16, 1275993), (18, 1134216), (24, 850662), (27, 756144), (36, 567108), (48, 425331), (54, 378072), (59, 346032), (72, 283554), (81, 252048), (89, 229392), (108, 189036), (118, 173016), (144, 141777), (162, 126024), (177, 115344), (178, 114696), (216, 94518), (236, 86508), (243, 84016), (267, 76464), (324, 63012), (354, 57672), (356, 57348), (432, 47259), (472, 43254), (486, 42008), (531, 38448), (534, 38232), (648, 31506), (708, 28836), (712, 28674), (801, 25488), (944, 21627), (972, 21004), (1062, 19224), (1068, 19116), (1296, 15753), (1416, 14418), (1424, 14337), (1593, 12816), (1602, 12744), (1944, 10502), (2124, 9612), (2136, 9558), (2403, 8496), (2832, 7209), (3186, 6408), (3204, 6372), (3888, 5251), (4248, 4806), (4272, 4779)]