20898075

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{347}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 38318976

約数和(自身を除く): 17420901

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 73, 75, 165, 219, 275, 347, 365, 803, 825, 1041, 1095, 1735, 1825, 2409, 3817, 4015, 5205, 5475, 8675, 11451, 12045, 19085, 20075, 25331, 26025, 57255, 60225, 75993, 95425, 126655, 278641, 286275, 379965, 633275, 835923, 1393205, 1899825, 4179615, 6966025, 20898075]

約数ペア:

[(1, 20898075), (3, 6966025), (5, 4179615), (11, 1899825), (15, 1393205), (25, 835923), (33, 633275), (55, 379965), (73, 286275), (75, 278641), (165, 126655), (219, 95425), (275, 75993), (347, 60225), (365, 57255), (803, 26025), (825, 25331), (1041, 20075), (1095, 19085), (1735, 12045), (1825, 11451), (2409, 8675), (3817, 5475), (4015, 5205)]