400007256

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:561

約数の個数: 128

約数和(自身を含む): 1130284800

約数和(自身を除く): 730277544

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 59, 61, 66, 88, 118, 122, 132, 177, 183, 236, 244, 264, 354, 366, 421, 472, 488, 649, 671, 708, 732, 842, 1263, 1298, 1342, 1416, 1464, 1684, 1947, 2013, 2526, 2596, 2684, 3368, 3599, 3894, 4026, 4631, 5052, 5192, 5368, 7198, 7788, 8052, 9262, 10104, 10797, 13893, 14396, 15576, 16104, 18524, 21594, 24839, 25681, 27786, 28792, 37048, 39589, 43188, 49678, 51362, 55572, 74517, 77043, 79178, 86376, 99356, 102724, 111144, 118767, 149034, 154086, 158356, 198712, 205448, 237534, 273229, 282491, 298068, 308172, 316712, 475068, 546458, 564982, 596136, 616344, 819687, 847473, 950136, 1092916, 1129964, 1515179, 1639374, 1694946, 2185832, 2259928, 3030358, 3278748, 3389892, 4545537, 6060716, 6557496, 6779784, 9091074, 12121432, 16666969, 18182148, 33333938, 36364296, 50000907, 66667876, 100001814, 133335752, 200003628, 400007256]

約数ペア:

[(1, 400007256), (2, 200003628), (3, 133335752), (4, 100001814), (6, 66667876), (8, 50000907), (11, 36364296), (12, 33333938), (22, 18182148), (24, 16666969), (33, 12121432), (44, 9091074), (59, 6779784), (61, 6557496), (66, 6060716), (88, 4545537), (118, 3389892), (122, 3278748), (132, 3030358), (177, 2259928), (183, 2185832), (236, 1694946), (244, 1639374), (264, 1515179), (354, 1129964), (366, 1092916), (421, 950136), (472, 847473), (488, 819687), (649, 616344), (671, 596136), (708, 564982), (732, 546458), (842, 475068), (1263, 316712), (1298, 308172), (1342, 298068), (1416, 282491), (1464, 273229), (1684, 237534), (1947, 205448), (2013, 198712), (2526, 158356), (2596, 154086), (2684, 149034), (3368, 118767), (3599, 111144), (3894, 102724), (4026, 99356), (4631, 86376), (5052, 79178), (5192, 77043), (5368, 74517), (7198, 55572), (7788, 51362), (8052, 49678), (9262, 43188), (10104, 39589), (10797, 37048), (13893, 28792), (14396, 27786), (15576, 25681), (16104, 24839), (18524, 21594)]