261609764

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1481}}^1$

素因数の和:1620

約数の個数: 48

約数和(自身を含む): 511230720

約数和(自身を除く): 249620956

約数列:

[1, 2, 4, 13, 26, 43, 52, 79, 86, 158, 172, 316, 559, 1027, 1118, 1481, 2054, 2236, 2962, 3397, 4108, 5924, 6794, 13588, 19253, 38506, 44161, 63683, 77012, 88322, 116999, 127366, 176644, 233998, 254732, 467996, 827879, 1520987, 1655758, 3041974, 3311516, 5030957, 6083948, 10061914, 20123828, 65402441, 130804882, 261609764]

約数ペア:

[(1, 261609764), (2, 130804882), (4, 65402441), (13, 20123828), (26, 10061914), (43, 6083948), (52, 5030957), (79, 3311516), (86, 3041974), (158, 1655758), (172, 1520987), (316, 827879), (559, 467996), (1027, 254732), (1118, 233998), (1481, 176644), (2054, 127366), (2236, 116999), (2962, 88322), (3397, 77012), (4108, 63683), (5924, 44161), (6794, 38506), (13588, 19253)]