20257648

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1801}}^1$

素因数の和:1865

約数の個数: 40

約数和(自身を含む): 42455120

約数和(自身を除く): 22197472

約数列:

[1, 2, 4, 8, 16, 19, 37, 38, 74, 76, 148, 152, 296, 304, 592, 703, 1406, 1801, 2812, 3602, 5624, 7204, 11248, 14408, 28816, 34219, 66637, 68438, 133274, 136876, 266548, 273752, 533096, 547504, 1066192, 1266103, 2532206, 5064412, 10128824, 20257648]

約数ペア:

[(1, 20257648), (2, 10128824), (4, 5064412), (8, 2532206), (16, 1266103), (19, 1066192), (37, 547504), (38, 533096), (74, 273752), (76, 266548), (148, 136876), (152, 133274), (296, 68438), (304, 66637), (592, 34219), (703, 28816), (1406, 14408), (1801, 11248), (2812, 7204), (3602, 5624)]