20951055

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{179}}^1$

素因数の和:230

約数の個数: 60

約数和(自身を含む): 40118760

約数和(自身を除く): 19167705

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 179, 255, 289, 405, 459, 537, 765, 867, 895, 1377, 1445, 1611, 2295, 2601, 2685, 3043, 4335, 4833, 6885, 7803, 8055, 9129, 13005, 14499, 15215, 23409, 24165, 27387, 39015, 45645, 51731, 72495, 82161, 117045, 136935, 155193, 246483, 258655, 410805, 465579, 775965, 1232415, 1396737, 2327895, 4190211, 6983685, 20951055]

約数ペア:

[(1, 20951055), (3, 6983685), (5, 4190211), (9, 2327895), (15, 1396737), (17, 1232415), (27, 775965), (45, 465579), (51, 410805), (81, 258655), (85, 246483), (135, 155193), (153, 136935), (179, 117045), (255, 82161), (289, 72495), (405, 51731), (459, 45645), (537, 39015), (765, 27387), (867, 24165), (895, 23409), (1377, 15215), (1445, 14499), (1611, 13005), (2295, 9129), (2601, 8055), (2685, 7803), (3043, 6885), (4335, 4833)]