21780903368

素因数分解:

$2^3\times 7^3\times {\mathrm{37}}^1\times {\mathrm{214531}}^1$

素因数の和:214595

約数の個数: 64

約数和(自身を含む): 48913296000

約数和(自身を除く): 27132392632

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 49, 56, 74, 98, 148, 196, 259, 296, 343, 392, 518, 686, 1036, 1372, 1813, 2072, 2744, 3626, 7252, 12691, 14504, 25382, 50764, 101528, 214531, 429062, 858124, 1501717, 1716248, 3003434, 6006868, 7937647, 10512019, 12013736, 15875294, 21024038, 31750588, 42048076, 55563529, 63501176, 73584133, 84096152, 111127058, 147168266, 222254116, 294336532, 388944703, 444508232, 588673064, 777889406, 1555778812, 2722612921, 3111557624, 5445225842, 10890451684, 21780903368]

約数ペア:

[(1, 21780903368), (2, 10890451684), (4, 5445225842), (7, 3111557624), (8, 2722612921), (14, 1555778812), (28, 777889406), (37, 588673064), (49, 444508232), (56, 388944703), (74, 294336532), (98, 222254116), (148, 147168266), (196, 111127058), (259, 84096152), (296, 73584133), (343, 63501176), (392, 55563529), (518, 42048076), (686, 31750588), (1036, 21024038), (1372, 15875294), (1813, 12013736), (2072, 10512019), (2744, 7937647), (3626, 6006868), (7252, 3003434), (12691, 1716248), (14504, 1501717), (25382, 858124), (50764, 429062), (101528, 214531)]