20647589180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1399}}^1\times {\mathrm{38839}}^1$

素因数の和:40266

約数の個数: 48

約数和(自身を含む): 45675840000

約数和(自身を除く): 25028250820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1399, 2798, 5596, 6995, 13990, 26581, 27980, 38839, 53162, 77678, 106324, 132905, 155356, 194195, 265810, 388390, 531620, 737941, 776780, 1475882, 2951764, 3689705, 7379410, 14758820, 54335761, 108671522, 217343044, 271678805, 543357610, 1032379459, 1086715220, 2064758918, 4129517836, 5161897295, 10323794590, 20647589180]

約数ペア:

[(1, 20647589180), (2, 10323794590), (4, 5161897295), (5, 4129517836), (10, 2064758918), (19, 1086715220), (20, 1032379459), (38, 543357610), (76, 271678805), (95, 217343044), (190, 108671522), (380, 54335761), (1399, 14758820), (2798, 7379410), (5596, 3689705), (6995, 2951764), (13990, 1475882), (26581, 776780), (27980, 737941), (38839, 531620), (53162, 388390), (77678, 265810), (106324, 194195), (132905, 155356)]