21191937776

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{5039}}^1$

素因数の和:5278

約数の個数: 80

約数和(自身を含む): 43397222400

約数和(自身を除く): 22205284624

約数列:

[1, 2, 4, 8, 16, 31, 61, 62, 122, 124, 139, 244, 248, 278, 488, 496, 556, 976, 1112, 1891, 2224, 3782, 4309, 5039, 7564, 8479, 8618, 10078, 15128, 16958, 17236, 20156, 30256, 33916, 34472, 40312, 67832, 68944, 80624, 135664, 156209, 262849, 307379, 312418, 525698, 614758, 624836, 700421, 1051396, 1229516, 1249672, 1400842, 2102792, 2459032, 2499344, 2801684, 4205584, 4918064, 5603368, 9528749, 11206736, 19057498, 21713051, 38114996, 42725681, 43426102, 76229992, 85451362, 86852204, 152459984, 170902724, 173704408, 341805448, 347408816, 683610896, 1324496111, 2648992222, 5297984444, 10595968888, 21191937776]

約数ペア:

[(1, 21191937776), (2, 10595968888), (4, 5297984444), (8, 2648992222), (16, 1324496111), (31, 683610896), (61, 347408816), (62, 341805448), (122, 173704408), (124, 170902724), (139, 152459984), (244, 86852204), (248, 85451362), (278, 76229992), (488, 43426102), (496, 42725681), (556, 38114996), (976, 21713051), (1112, 19057498), (1891, 11206736), (2224, 9528749), (3782, 5603368), (4309, 4918064), (5039, 4205584), (7564, 2801684), (8479, 2499344), (8618, 2459032), (10078, 2102792), (15128, 1400842), (16958, 1249672), (17236, 1229516), (20156, 1051396), (30256, 700421), (33916, 624836), (34472, 614758), (40312, 525698), (67832, 312418), (68944, 307379), (80624, 262849), (135664, 156209)]