220677968

素因数分解:

$2^4\times 7^3\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:617

約数の個数: 80

約数和(自身を含む): 505920000

約数和(自身を除く): 285242032

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 79, 98, 112, 158, 196, 316, 343, 392, 509, 553, 632, 686, 784, 1018, 1106, 1264, 1372, 2036, 2212, 2744, 3563, 3871, 4072, 4424, 5488, 7126, 7742, 8144, 8848, 14252, 15484, 24941, 27097, 28504, 30968, 40211, 49882, 54194, 57008, 61936, 80422, 99764, 108388, 160844, 174587, 199528, 216776, 281477, 321688, 349174, 399056, 433552, 562954, 643376, 698348, 1125908, 1396696, 1970339, 2251816, 2793392, 3940678, 4503632, 7881356, 13792373, 15762712, 27584746, 31525424, 55169492, 110338984, 220677968]

約数ペア:

[(1, 220677968), (2, 110338984), (4, 55169492), (7, 31525424), (8, 27584746), (14, 15762712), (16, 13792373), (28, 7881356), (49, 4503632), (56, 3940678), (79, 2793392), (98, 2251816), (112, 1970339), (158, 1396696), (196, 1125908), (316, 698348), (343, 643376), (392, 562954), (509, 433552), (553, 399056), (632, 349174), (686, 321688), (784, 281477), (1018, 216776), (1106, 199528), (1264, 174587), (1372, 160844), (2036, 108388), (2212, 99764), (2744, 80422), (3563, 61936), (3871, 57008), (4072, 54194), (4424, 49882), (5488, 40211), (7126, 30968), (7742, 28504), (8144, 27097), (8848, 24941), (14252, 15484)]