21072064

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:118

約数の個数: 112

約数和(自身を含む): 50068480

約数和(自身を除く): 28996416

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 31, 32, 38, 43, 52, 62, 64, 76, 86, 104, 124, 152, 172, 208, 247, 248, 304, 344, 403, 416, 494, 496, 559, 589, 608, 688, 806, 817, 832, 988, 992, 1118, 1178, 1216, 1333, 1376, 1612, 1634, 1976, 1984, 2236, 2356, 2666, 2752, 3224, 3268, 3952, 4472, 4712, 5332, 6448, 6536, 7657, 7904, 8944, 9424, 10621, 10664, 12896, 13072, 15314, 15808, 17329, 17888, 18848, 21242, 21328, 25327, 25792, 26144, 30628, 34658, 35776, 37696, 42484, 42656, 50654, 52288, 61256, 69316, 84968, 85312, 101308, 122512, 138632, 169936, 202616, 245024, 277264, 329251, 339872, 405232, 490048, 554528, 658502, 679744, 810464, 1109056, 1317004, 1620928, 2634008, 5268016, 10536032, 21072064]

約数ペア:

[(1, 21072064), (2, 10536032), (4, 5268016), (8, 2634008), (13, 1620928), (16, 1317004), (19, 1109056), (26, 810464), (31, 679744), (32, 658502), (38, 554528), (43, 490048), (52, 405232), (62, 339872), (64, 329251), (76, 277264), (86, 245024), (104, 202616), (124, 169936), (152, 138632), (172, 122512), (208, 101308), (247, 85312), (248, 84968), (304, 69316), (344, 61256), (403, 52288), (416, 50654), (494, 42656), (496, 42484), (559, 37696), (589, 35776), (608, 34658), (688, 30628), (806, 26144), (817, 25792), (832, 25327), (988, 21328), (992, 21242), (1118, 18848), (1178, 17888), (1216, 17329), (1333, 15808), (1376, 15314), (1612, 13072), (1634, 12896), (1976, 10664), (1984, 10621), (2236, 9424), (2356, 8944), (2666, 7904), (2752, 7657), (3224, 6536), (3268, 6448), (3952, 5332), (4472, 4712)]