18908757

素因数分解:

$3^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{809}}^1$

素因数の和:882

約数の個数: 36

約数和(自身を含む): 32411340

約数和(自身を除く): 13502583

約数列:

[1, 3, 7, 9, 21, 49, 53, 63, 147, 159, 371, 441, 477, 809, 1113, 2427, 2597, 3339, 5663, 7281, 7791, 16989, 23373, 39641, 42877, 50967, 118923, 128631, 300139, 356769, 385893, 900417, 2100973, 2701251, 6302919, 18908757]

約数ペア:

[(1, 18908757), (3, 6302919), (7, 2701251), (9, 2100973), (21, 900417), (49, 385893), (53, 356769), (63, 300139), (147, 128631), (159, 118923), (371, 50967), (441, 42877), (477, 39641), (809, 23373), (1113, 16989), (2427, 7791), (2597, 7281), (3339, 5663)]