19745648

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1609}}^1$

素因数の和:1689

約数の個数: 40

約数和(自身を含む): 41924400

約数和(自身を除く): 22178752

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 59, 104, 118, 208, 236, 472, 767, 944, 1534, 1609, 3068, 3218, 6136, 6436, 12272, 12872, 20917, 25744, 41834, 83668, 94931, 167336, 189862, 334672, 379724, 759448, 1234103, 1518896, 2468206, 4936412, 9872824, 19745648]

約数ペア:

[(1, 19745648), (2, 9872824), (4, 4936412), (8, 2468206), (13, 1518896), (16, 1234103), (26, 759448), (52, 379724), (59, 334672), (104, 189862), (118, 167336), (208, 94931), (236, 83668), (472, 41834), (767, 25744), (944, 20917), (1534, 12872), (1609, 12272), (3068, 6436), (3218, 6136)]