21149128

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 56448000

約数和(自身を除く): 35298872

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 19, 22, 26, 28, 38, 44, 52, 56, 76, 77, 88, 91, 104, 133, 139, 143, 152, 154, 182, 209, 247, 266, 278, 286, 308, 364, 418, 494, 532, 556, 572, 616, 728, 836, 973, 988, 1001, 1064, 1112, 1144, 1463, 1529, 1672, 1729, 1807, 1946, 1976, 2002, 2641, 2717, 2926, 3058, 3458, 3614, 3892, 4004, 5282, 5434, 5852, 6116, 6916, 7228, 7784, 8008, 10564, 10703, 10868, 11704, 12232, 12649, 13832, 14456, 18487, 19019, 19877, 21128, 21406, 21736, 25298, 29051, 34333, 36974, 38038, 39754, 42812, 50596, 58102, 68666, 73948, 76076, 79508, 85624, 101192, 116204, 137332, 139139, 147896, 152152, 159016, 203357, 232408, 240331, 274664, 278278, 377663, 406714, 480662, 556556, 755326, 813428, 961324, 1113112, 1510652, 1626856, 1922648, 2643641, 3021304, 5287282, 10574564, 21149128]

約数ペア:

[(1, 21149128), (2, 10574564), (4, 5287282), (7, 3021304), (8, 2643641), (11, 1922648), (13, 1626856), (14, 1510652), (19, 1113112), (22, 961324), (26, 813428), (28, 755326), (38, 556556), (44, 480662), (52, 406714), (56, 377663), (76, 278278), (77, 274664), (88, 240331), (91, 232408), (104, 203357), (133, 159016), (139, 152152), (143, 147896), (152, 139139), (154, 137332), (182, 116204), (209, 101192), (247, 85624), (266, 79508), (278, 76076), (286, 73948), (308, 68666), (364, 58102), (418, 50596), (494, 42812), (532, 39754), (556, 38038), (572, 36974), (616, 34333), (728, 29051), (836, 25298), (973, 21736), (988, 21406), (1001, 21128), (1064, 19877), (1112, 19019), (1144, 18487), (1463, 14456), (1529, 13832), (1672, 12649), (1729, 12232), (1807, 11704), (1946, 10868), (1976, 10703), (2002, 10564), (2641, 8008), (2717, 7784), (2926, 7228), (3058, 6916), (3458, 6116), (3614, 5852), (3892, 5434), (4004, 5282)]