21170864

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{487}}^1$

素因数の和:538

約数の個数: 80

約数和(自身を含む): 50830080

約数和(自身を除く): 29659216

約数列:

[1, 2, 4, 8, 11, 13, 16, 19, 22, 26, 38, 44, 52, 76, 88, 104, 143, 152, 176, 208, 209, 247, 286, 304, 418, 487, 494, 572, 836, 974, 988, 1144, 1672, 1948, 1976, 2288, 2717, 3344, 3896, 3952, 5357, 5434, 6331, 7792, 9253, 10714, 10868, 12662, 18506, 21428, 21736, 25324, 37012, 42856, 43472, 50648, 69641, 74024, 85712, 101296, 101783, 120289, 139282, 148048, 203566, 240578, 278564, 407132, 481156, 557128, 814264, 962312, 1114256, 1323179, 1628528, 1924624, 2646358, 5292716, 10585432, 21170864]

約数ペア:

[(1, 21170864), (2, 10585432), (4, 5292716), (8, 2646358), (11, 1924624), (13, 1628528), (16, 1323179), (19, 1114256), (22, 962312), (26, 814264), (38, 557128), (44, 481156), (52, 407132), (76, 278564), (88, 240578), (104, 203566), (143, 148048), (152, 139282), (176, 120289), (208, 101783), (209, 101296), (247, 85712), (286, 74024), (304, 69641), (418, 50648), (487, 43472), (494, 42856), (572, 37012), (836, 25324), (974, 21736), (988, 21428), (1144, 18506), (1672, 12662), (1948, 10868), (1976, 10714), (2288, 9253), (2717, 7792), (3344, 6331), (3896, 5434), (3952, 5357)]