20898972

素因数分解:

$2^2\times 3^7\times {\mathrm{2389}}^1$

素因数の和:2414

約数の個数: 48

約数和(自身を含む): 54874400

約数和(自身を除く): 33975428

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2187, 2389, 2916, 4374, 4778, 7167, 8748, 9556, 14334, 21501, 28668, 43002, 64503, 86004, 129006, 193509, 258012, 387018, 580527, 774036, 1161054, 1741581, 2322108, 3483162, 5224743, 6966324, 10449486, 20898972]

約数ペア:

[(1, 20898972), (2, 10449486), (3, 6966324), (4, 5224743), (6, 3483162), (9, 2322108), (12, 1741581), (18, 1161054), (27, 774036), (36, 580527), (54, 387018), (81, 258012), (108, 193509), (162, 129006), (243, 86004), (324, 64503), (486, 43002), (729, 28668), (972, 21501), (1458, 14334), (2187, 9556), (2389, 8748), (2916, 7167), (4374, 4778)]