20331388

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{353}}^1$

素因数の和:403

約数の個数: 72

約数和(自身を含む): 47458656

約数和(自身を除く): 27127268

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 121, 154, 187, 238, 242, 308, 353, 374, 476, 484, 706, 748, 847, 1309, 1412, 1694, 2057, 2471, 2618, 3388, 3883, 4114, 4942, 5236, 6001, 7766, 8228, 9884, 12002, 14399, 15532, 24004, 27181, 28798, 42007, 42713, 54362, 57596, 66011, 84014, 85426, 108724, 132022, 168028, 170852, 264044, 298991, 462077, 597982, 726121, 924154, 1195964, 1452242, 1848308, 2904484, 5082847, 10165694, 20331388]

約数ペア:

[(1, 20331388), (2, 10165694), (4, 5082847), (7, 2904484), (11, 1848308), (14, 1452242), (17, 1195964), (22, 924154), (28, 726121), (34, 597982), (44, 462077), (68, 298991), (77, 264044), (119, 170852), (121, 168028), (154, 132022), (187, 108724), (238, 85426), (242, 84014), (308, 66011), (353, 57596), (374, 54362), (476, 42713), (484, 42007), (706, 28798), (748, 27181), (847, 24004), (1309, 15532), (1412, 14399), (1694, 12002), (2057, 9884), (2471, 8228), (2618, 7766), (3388, 6001), (3883, 5236), (4114, 4942)]