21053256

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1109}}^1$

素因数の和:1238

約数の個数: 64

約数和(自身を含む): 60739200

約数和(自身を除く): 39685944

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 113, 168, 226, 339, 452, 678, 791, 904, 1109, 1356, 1582, 2218, 2373, 2712, 3164, 3327, 4436, 4746, 6328, 6654, 7763, 8872, 9492, 13308, 15526, 18984, 23289, 26616, 31052, 46578, 62104, 93156, 125317, 186312, 250634, 375951, 501268, 751902, 877219, 1002536, 1503804, 1754438, 2631657, 3007608, 3508876, 5263314, 7017752, 10526628, 21053256]

約数ペア:

[(1, 21053256), (2, 10526628), (3, 7017752), (4, 5263314), (6, 3508876), (7, 3007608), (8, 2631657), (12, 1754438), (14, 1503804), (21, 1002536), (24, 877219), (28, 751902), (42, 501268), (56, 375951), (84, 250634), (113, 186312), (168, 125317), (226, 93156), (339, 62104), (452, 46578), (678, 31052), (791, 26616), (904, 23289), (1109, 18984), (1356, 15526), (1582, 13308), (2218, 9492), (2373, 8872), (2712, 7763), (3164, 6654), (3327, 6328), (4436, 4746)]