21140256

素因数分解:

$2^5\times 3^1\times {\mathrm{41}}^2\times {\mathrm{131}}^1$

素因数の和:226

約数の個数: 72

約数和(自身を含む): 57313872

約数和(自身を除く): 36173616

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 41, 48, 82, 96, 123, 131, 164, 246, 262, 328, 393, 492, 524, 656, 786, 984, 1048, 1312, 1572, 1681, 1968, 2096, 3144, 3362, 3936, 4192, 5043, 5371, 6288, 6724, 10086, 10742, 12576, 13448, 16113, 20172, 21484, 26896, 32226, 40344, 42968, 53792, 64452, 80688, 85936, 128904, 161376, 171872, 220211, 257808, 440422, 515616, 660633, 880844, 1321266, 1761688, 2642532, 3523376, 5285064, 7046752, 10570128, 21140256]

約数ペア:

[(1, 21140256), (2, 10570128), (3, 7046752), (4, 5285064), (6, 3523376), (8, 2642532), (12, 1761688), (16, 1321266), (24, 880844), (32, 660633), (41, 515616), (48, 440422), (82, 257808), (96, 220211), (123, 171872), (131, 161376), (164, 128904), (246, 85936), (262, 80688), (328, 64452), (393, 53792), (492, 42968), (524, 40344), (656, 32226), (786, 26896), (984, 21484), (1048, 20172), (1312, 16113), (1572, 13448), (1681, 12576), (1968, 10742), (2096, 10086), (3144, 6724), (3362, 6288), (3936, 5371), (4192, 5043)]