21564156

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:175

約数の個数: 72

約数和(自身を含む): 54503680

約数和(自身を除く): 32939524

約数列:

[1, 2, 3, 4, 6, 12, 23, 43, 46, 69, 79, 86, 92, 129, 138, 158, 172, 237, 258, 276, 316, 474, 516, 529, 948, 989, 1058, 1587, 1817, 1978, 2116, 2967, 3174, 3397, 3634, 3956, 5451, 5934, 6348, 6794, 7268, 10191, 10902, 11868, 13588, 20382, 21804, 22747, 40764, 41791, 45494, 68241, 78131, 83582, 90988, 125373, 136482, 156262, 167164, 234393, 250746, 272964, 312524, 468786, 501492, 937572, 1797013, 3594026, 5391039, 7188052, 10782078, 21564156]

約数ペア:

[(1, 21564156), (2, 10782078), (3, 7188052), (4, 5391039), (6, 3594026), (12, 1797013), (23, 937572), (43, 501492), (46, 468786), (69, 312524), (79, 272964), (86, 250746), (92, 234393), (129, 167164), (138, 156262), (158, 136482), (172, 125373), (237, 90988), (258, 83582), (276, 78131), (316, 68241), (474, 45494), (516, 41791), (529, 40764), (948, 22747), (989, 21804), (1058, 20382), (1587, 13588), (1817, 11868), (1978, 10902), (2116, 10191), (2967, 7268), (3174, 6794), (3397, 6348), (3634, 5934), (3956, 5451)]