21621432

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:173

約数の個数: 128

約数和(自身を含む): 65640960

約数和(自身を除く): 44019528

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 41, 42, 43, 56, 73, 82, 84, 86, 123, 129, 146, 164, 168, 172, 219, 246, 258, 287, 292, 301, 328, 344, 438, 492, 511, 516, 574, 584, 602, 861, 876, 903, 984, 1022, 1032, 1148, 1204, 1533, 1722, 1752, 1763, 1806, 2044, 2296, 2408, 2993, 3066, 3139, 3444, 3526, 3612, 4088, 5289, 5986, 6132, 6278, 6888, 7052, 7224, 8979, 9417, 10578, 11972, 12264, 12341, 12556, 14104, 17958, 18834, 20951, 21156, 21973, 23944, 24682, 25112, 35916, 37023, 37668, 41902, 42312, 43946, 49364, 62853, 65919, 71832, 74046, 75336, 83804, 87892, 98728, 125706, 128699, 131838, 148092, 167608, 175784, 251412, 257398, 263676, 296184, 386097, 502824, 514796, 527352, 772194, 900893, 1029592, 1544388, 1801786, 2702679, 3088776, 3603572, 5405358, 7207144, 10810716, 21621432]

約数ペア:

[(1, 21621432), (2, 10810716), (3, 7207144), (4, 5405358), (6, 3603572), (7, 3088776), (8, 2702679), (12, 1801786), (14, 1544388), (21, 1029592), (24, 900893), (28, 772194), (41, 527352), (42, 514796), (43, 502824), (56, 386097), (73, 296184), (82, 263676), (84, 257398), (86, 251412), (123, 175784), (129, 167608), (146, 148092), (164, 131838), (168, 128699), (172, 125706), (219, 98728), (246, 87892), (258, 83804), (287, 75336), (292, 74046), (301, 71832), (328, 65919), (344, 62853), (438, 49364), (492, 43946), (511, 42312), (516, 41902), (574, 37668), (584, 37023), (602, 35916), (861, 25112), (876, 24682), (903, 23944), (984, 21973), (1022, 21156), (1032, 20951), (1148, 18834), (1204, 17958), (1533, 14104), (1722, 12556), (1752, 12341), (1763, 12264), (1806, 11972), (2044, 10578), (2296, 9417), (2408, 8979), (2993, 7224), (3066, 7052), (3139, 6888), (3444, 6278), (3526, 6132), (3612, 5986), (4088, 5289)]