21990528

素因数分解:

$2^7\times 3^5\times 7^1\times {\mathrm{101}}^1$

素因数の和:137

約数の個数: 192

約数和(自身を含む): 75741120

約数和(自身を除く): 53750592

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 54, 56, 63, 64, 72, 81, 84, 96, 101, 108, 112, 126, 128, 144, 162, 168, 189, 192, 202, 216, 224, 243, 252, 288, 303, 324, 336, 378, 384, 404, 432, 448, 486, 504, 567, 576, 606, 648, 672, 707, 756, 808, 864, 896, 909, 972, 1008, 1134, 1152, 1212, 1296, 1344, 1414, 1512, 1616, 1701, 1728, 1818, 1944, 2016, 2121, 2268, 2424, 2592, 2688, 2727, 2828, 3024, 3232, 3402, 3456, 3636, 3888, 4032, 4242, 4536, 4848, 5184, 5454, 5656, 6048, 6363, 6464, 6804, 7272, 7776, 8064, 8181, 8484, 9072, 9696, 10368, 10908, 11312, 12096, 12726, 12928, 13608, 14544, 15552, 16362, 16968, 18144, 19089, 19392, 21816, 22624, 24192, 24543, 25452, 27216, 29088, 31104, 32724, 33936, 36288, 38178, 38784, 43632, 45248, 49086, 50904, 54432, 57267, 58176, 65448, 67872, 72576, 76356, 87264, 90496, 98172, 101808, 108864, 114534, 116352, 130896, 135744, 152712, 171801, 174528, 196344, 203616, 217728, 229068, 261792, 271488, 305424, 343602, 349056, 392688, 407232, 458136, 523584, 610848, 687204, 785376, 814464, 916272, 1047168, 1221696, 1374408, 1570752, 1832544, 2443392, 2748816, 3141504, 3665088, 5497632, 7330176, 10995264, 21990528]

約数ペア:

[(1, 21990528), (2, 10995264), (3, 7330176), (4, 5497632), (6, 3665088), (7, 3141504), (8, 2748816), (9, 2443392), (12, 1832544), (14, 1570752), (16, 1374408), (18, 1221696), (21, 1047168), (24, 916272), (27, 814464), (28, 785376), (32, 687204), (36, 610848), (42, 523584), (48, 458136), (54, 407232), (56, 392688), (63, 349056), (64, 343602), (72, 305424), (81, 271488), (84, 261792), (96, 229068), (101, 217728), (108, 203616), (112, 196344), (126, 174528), (128, 171801), (144, 152712), (162, 135744), (168, 130896), (189, 116352), (192, 114534), (202, 108864), (216, 101808), (224, 98172), (243, 90496), (252, 87264), (288, 76356), (303, 72576), (324, 67872), (336, 65448), (378, 58176), (384, 57267), (404, 54432), (432, 50904), (448, 49086), (486, 45248), (504, 43632), (567, 38784), (576, 38178), (606, 36288), (648, 33936), (672, 32724), (707, 31104), (756, 29088), (808, 27216), (864, 25452), (896, 24543), (909, 24192), (972, 22624), (1008, 21816), (1134, 19392), (1152, 19089), (1212, 18144), (1296, 16968), (1344, 16362), (1414, 15552), (1512, 14544), (1616, 13608), (1701, 12928), (1728, 12726), (1818, 12096), (1944, 11312), (2016, 10908), (2121, 10368), (2268, 9696), (2424, 9072), (2592, 8484), (2688, 8181), (2727, 8064), (2828, 7776), (3024, 7272), (3232, 6804), (3402, 6464), (3456, 6363), (3636, 6048), (3888, 5656), (4032, 5454), (4242, 5184), (4536, 4848)]