21655696

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{709}}^1$

素因数の和:823

約数の個数: 40

約数和(自身を含む): 44372160

約数和(自身を除く): 22716464

約数列:

[1, 2, 4, 8, 16, 23, 46, 83, 92, 166, 184, 332, 368, 664, 709, 1328, 1418, 1909, 2836, 3818, 5672, 7636, 11344, 15272, 16307, 30544, 32614, 58847, 65228, 117694, 130456, 235388, 260912, 470776, 941552, 1353481, 2706962, 5413924, 10827848, 21655696]

約数ペア:

[(1, 21655696), (2, 10827848), (4, 5413924), (8, 2706962), (16, 1353481), (23, 941552), (46, 470776), (83, 260912), (92, 235388), (166, 130456), (184, 117694), (332, 65228), (368, 58847), (664, 32614), (709, 30544), (1328, 16307), (1418, 15272), (1909, 11344), (2836, 7636), (3818, 5672)]