20713140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{967}}^1$

素因数の和:1006

約数の個数: 144

約数和(自身を含む): 76108032

約数和(自身を除く): 55394892

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 51, 60, 63, 68, 70, 84, 85, 90, 102, 105, 119, 126, 140, 153, 170, 180, 204, 210, 238, 252, 255, 306, 315, 340, 357, 420, 476, 510, 595, 612, 630, 714, 765, 967, 1020, 1071, 1190, 1260, 1428, 1530, 1785, 1934, 2142, 2380, 2901, 3060, 3570, 3868, 4284, 4835, 5355, 5802, 6769, 7140, 8703, 9670, 10710, 11604, 13538, 14505, 16439, 17406, 19340, 20307, 21420, 27076, 29010, 32878, 33845, 34812, 40614, 43515, 49317, 58020, 60921, 65756, 67690, 81228, 82195, 87030, 98634, 101535, 115073, 121842, 135380, 147951, 164390, 174060, 197268, 203070, 230146, 243684, 246585, 295902, 304605, 328780, 345219, 406140, 460292, 493170, 575365, 591804, 609210, 690438, 739755, 986340, 1035657, 1150730, 1218420, 1380876, 1479510, 1726095, 2071314, 2301460, 2959020, 3452190, 4142628, 5178285, 6904380, 10356570, 20713140]

約数ペア:

[(1, 20713140), (2, 10356570), (3, 6904380), (4, 5178285), (5, 4142628), (6, 3452190), (7, 2959020), (9, 2301460), (10, 2071314), (12, 1726095), (14, 1479510), (15, 1380876), (17, 1218420), (18, 1150730), (20, 1035657), (21, 986340), (28, 739755), (30, 690438), (34, 609210), (35, 591804), (36, 575365), (42, 493170), (45, 460292), (51, 406140), (60, 345219), (63, 328780), (68, 304605), (70, 295902), (84, 246585), (85, 243684), (90, 230146), (102, 203070), (105, 197268), (119, 174060), (126, 164390), (140, 147951), (153, 135380), (170, 121842), (180, 115073), (204, 101535), (210, 98634), (238, 87030), (252, 82195), (255, 81228), (306, 67690), (315, 65756), (340, 60921), (357, 58020), (420, 49317), (476, 43515), (510, 40614), (595, 34812), (612, 33845), (630, 32878), (714, 29010), (765, 27076), (967, 21420), (1020, 20307), (1071, 19340), (1190, 17406), (1260, 16439), (1428, 14505), (1530, 13538), (1785, 11604), (1934, 10710), (2142, 9670), (2380, 8703), (2901, 7140), (3060, 6769), (3570, 5802), (3868, 5355), (4284, 4835)]