21984417

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1579}}^1$

素因数の和:1622

約数の個数: 48

約数和(自身を含む): 41408640

約数和(自身を除く): 19424223

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 117, 119, 153, 221, 273, 357, 663, 819, 1071, 1547, 1579, 1989, 4641, 4737, 11053, 13923, 14211, 20527, 26843, 33159, 61581, 80529, 99477, 143689, 184743, 187901, 241587, 348959, 431067, 563703, 1046877, 1293201, 1691109, 2442713, 3140631, 7328139, 21984417]

約数ペア:

[(1, 21984417), (3, 7328139), (7, 3140631), (9, 2442713), (13, 1691109), (17, 1293201), (21, 1046877), (39, 563703), (51, 431067), (63, 348959), (91, 241587), (117, 187901), (119, 184743), (153, 143689), (221, 99477), (273, 80529), (357, 61581), (663, 33159), (819, 26843), (1071, 20527), (1547, 14211), (1579, 13923), (1989, 11053), (4641, 4737)]