21256368

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1543}}^1$

素因数の和:1602

約数の個数: 80

約数和(自身を含む): 64329216

約数和(自身を除く): 43072848

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 41, 42, 48, 56, 82, 84, 112, 123, 164, 168, 246, 287, 328, 336, 492, 574, 656, 861, 984, 1148, 1543, 1722, 1968, 2296, 3086, 3444, 4592, 4629, 6172, 6888, 9258, 10801, 12344, 13776, 18516, 21602, 24688, 32403, 37032, 43204, 63263, 64806, 74064, 86408, 126526, 129612, 172816, 189789, 253052, 259224, 379578, 442841, 506104, 518448, 759156, 885682, 1012208, 1328523, 1518312, 1771364, 2657046, 3036624, 3542728, 5314092, 7085456, 10628184, 21256368]

約数ペア:

[(1, 21256368), (2, 10628184), (3, 7085456), (4, 5314092), (6, 3542728), (7, 3036624), (8, 2657046), (12, 1771364), (14, 1518312), (16, 1328523), (21, 1012208), (24, 885682), (28, 759156), (41, 518448), (42, 506104), (48, 442841), (56, 379578), (82, 259224), (84, 253052), (112, 189789), (123, 172816), (164, 129612), (168, 126526), (246, 86408), (287, 74064), (328, 64806), (336, 63263), (492, 43204), (574, 37032), (656, 32403), (861, 24688), (984, 21602), (1148, 18516), (1543, 13776), (1722, 12344), (1968, 10801), (2296, 9258), (3086, 6888), (3444, 6172), (4592, 4629)]