21017269888

素因数分解:

$2^7\times {\mathrm{31}}^2\times {\mathrm{61}}^1\times {\mathrm{2801}}^1$

素因数の和:2938

約数の個数: 96

約数和(自身を含む): 43989522660

約数和(自身を除く): 22972252772

約数列:

[1, 2, 4, 8, 16, 31, 32, 61, 62, 64, 122, 124, 128, 244, 248, 488, 496, 961, 976, 992, 1891, 1922, 1952, 1984, 2801, 3782, 3844, 3904, 3968, 5602, 7564, 7688, 7808, 11204, 15128, 15376, 22408, 30256, 30752, 44816, 58621, 60512, 61504, 86831, 89632, 117242, 121024, 123008, 170861, 173662, 179264, 234484, 242048, 341722, 347324, 358528, 468968, 683444, 694648, 937936, 1366888, 1389296, 1875872, 2691761, 2733776, 2778592, 3751744, 5296691, 5383522, 5467552, 5557184, 7503488, 10593382, 10767044, 10935104, 11114368, 21186764, 21534088, 21870208, 42373528, 43068176, 84747056, 86136352, 164197421, 169494112, 172272704, 328394842, 338988224, 344545408, 656789684, 677976448, 1313579368, 2627158736, 5254317472, 10508634944, 21017269888]

約数ペア:

[(1, 21017269888), (2, 10508634944), (4, 5254317472), (8, 2627158736), (16, 1313579368), (31, 677976448), (32, 656789684), (61, 344545408), (62, 338988224), (64, 328394842), (122, 172272704), (124, 169494112), (128, 164197421), (244, 86136352), (248, 84747056), (488, 43068176), (496, 42373528), (961, 21870208), (976, 21534088), (992, 21186764), (1891, 11114368), (1922, 10935104), (1952, 10767044), (1984, 10593382), (2801, 7503488), (3782, 5557184), (3844, 5467552), (3904, 5383522), (3968, 5296691), (5602, 3751744), (7564, 2778592), (7688, 2733776), (7808, 2691761), (11204, 1875872), (15128, 1389296), (15376, 1366888), (22408, 937936), (30256, 694648), (30752, 683444), (44816, 468968), (58621, 358528), (60512, 347324), (61504, 341722), (86831, 242048), (89632, 234484), (117242, 179264), (121024, 173662), (123008, 170861)]