21865792

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:707

約数の個数: 56

約数和(自身を含む): 47941992

約数和(自身を除く): 26076200

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 41, 52, 64, 82, 104, 164, 208, 328, 416, 533, 641, 656, 832, 1066, 1282, 1312, 2132, 2564, 2624, 4264, 5128, 8333, 8528, 10256, 16666, 17056, 20512, 26281, 33332, 34112, 41024, 52562, 66664, 105124, 133328, 210248, 266656, 341653, 420496, 533312, 683306, 840992, 1366612, 1681984, 2733224, 5466448, 10932896, 21865792]

約数ペア:

[(1, 21865792), (2, 10932896), (4, 5466448), (8, 2733224), (13, 1681984), (16, 1366612), (26, 840992), (32, 683306), (41, 533312), (52, 420496), (64, 341653), (82, 266656), (104, 210248), (164, 133328), (208, 105124), (328, 66664), (416, 52562), (533, 41024), (641, 34112), (656, 33332), (832, 26281), (1066, 20512), (1282, 17056), (1312, 16666), (2132, 10256), (2564, 8528), (2624, 8333), (4264, 5128)]