2020454975

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{317}}^1$

素因数の和:406

約数の個数: 108

約数和(自身を含む): 3288273912

約数和(自身を除く): 1267818937

約数列:

[1, 5, 7, 11, 25, 35, 43, 49, 55, 77, 121, 175, 215, 245, 275, 301, 317, 385, 473, 539, 605, 847, 1075, 1225, 1505, 1585, 1925, 2107, 2219, 2365, 2695, 3025, 3311, 3487, 4235, 5203, 5929, 7525, 7925, 10535, 11095, 11825, 13475, 13631, 15533, 16555, 17435, 21175, 23177, 24409, 26015, 29645, 36421, 38357, 52675, 55475, 68155, 77665, 82775, 87175, 95417, 115885, 122045, 130075, 148225, 149941, 170863, 182105, 191785, 254947, 268499, 340775, 388325, 477085, 579425, 610225, 667919, 749705, 854315, 910525, 958925, 1049587, 1274735, 1342495, 1649351, 1879493, 2385425, 3339595, 3748525, 4271575, 5247935, 6373675, 6712475, 7347109, 8246755, 9397465, 11545457, 16697975, 26239675, 36735545, 41233775, 46987325, 57727285, 80818199, 183677725, 288636425, 404090995, 2020454975]

約数ペア:

[(1, 2020454975), (5, 404090995), (7, 288636425), (11, 183677725), (25, 80818199), (35, 57727285), (43, 46987325), (49, 41233775), (55, 36735545), (77, 26239675), (121, 16697975), (175, 11545457), (215, 9397465), (245, 8246755), (275, 7347109), (301, 6712475), (317, 6373675), (385, 5247935), (473, 4271575), (539, 3748525), (605, 3339595), (847, 2385425), (1075, 1879493), (1225, 1649351), (1505, 1342495), (1585, 1274735), (1925, 1049587), (2107, 958925), (2219, 910525), (2365, 854315), (2695, 749705), (3025, 667919), (3311, 610225), (3487, 579425), (4235, 477085), (5203, 388325), (5929, 340775), (7525, 268499), (7925, 254947), (10535, 191785), (11095, 182105), (11825, 170863), (13475, 149941), (13631, 148225), (15533, 130075), (16555, 122045), (17435, 115885), (21175, 95417), (23177, 87175), (24409, 82775), (26015, 77665), (29645, 68155), (36421, 55475), (38357, 52675)]