20929129720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1\times {\mathrm{37537}}^1$

素因数の和:37864

約数の個数: 64

約数和(自身を含む): 48162755520

約数和(自身を除く): 27233625800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 263, 265, 424, 526, 530, 1052, 1060, 1315, 2104, 2120, 2630, 5260, 10520, 13939, 27878, 37537, 55756, 69695, 75074, 111512, 139390, 150148, 187685, 278780, 300296, 375370, 557560, 750740, 1501480, 1989461, 3978922, 7957844, 9872231, 9947305, 15915688, 19744462, 19894610, 39488924, 39789220, 49361155, 78977848, 79578440, 98722310, 197444620, 394889240, 523228243, 1046456486, 2092912972, 2616141215, 4185825944, 5232282430, 10464564860, 20929129720]

約数ペア:

[(1, 20929129720), (2, 10464564860), (4, 5232282430), (5, 4185825944), (8, 2616141215), (10, 2092912972), (20, 1046456486), (40, 523228243), (53, 394889240), (106, 197444620), (212, 98722310), (263, 79578440), (265, 78977848), (424, 49361155), (526, 39789220), (530, 39488924), (1052, 19894610), (1060, 19744462), (1315, 15915688), (2104, 9947305), (2120, 9872231), (2630, 7957844), (5260, 3978922), (10520, 1989461), (13939, 1501480), (27878, 750740), (37537, 557560), (55756, 375370), (69695, 300296), (75074, 278780), (111512, 187685), (139390, 150148)]