640821888

素因数分解:

$2^7\times 3^3\times 7^1\times {\mathrm{26489}}^1$

素因数の和:26519

約数の個数: 128

約数和(自身を含む): 2161584000

約数和(自身を除く): 1520762112

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 54, 56, 63, 64, 72, 84, 96, 108, 112, 126, 128, 144, 168, 189, 192, 216, 224, 252, 288, 336, 378, 384, 432, 448, 504, 576, 672, 756, 864, 896, 1008, 1152, 1344, 1512, 1728, 2016, 2688, 3024, 3456, 4032, 6048, 8064, 12096, 24192, 26489, 52978, 79467, 105956, 158934, 185423, 211912, 238401, 317868, 370846, 423824, 476802, 556269, 635736, 715203, 741692, 847648, 953604, 1112538, 1271472, 1430406, 1483384, 1668807, 1695296, 1907208, 2225076, 2542944, 2860812, 2966768, 3337614, 3390592, 3814416, 4450152, 5006421, 5085888, 5721624, 5933536, 6675228, 7628832, 8900304, 10012842, 10171776, 11443248, 11867072, 13350456, 15257664, 17800608, 20025684, 22886496, 23734144, 26700912, 30515328, 35601216, 40051368, 45772992, 53401824, 71202432, 80102736, 91545984, 106803648, 160205472, 213607296, 320410944, 640821888]

約数ペア:

[(1, 640821888), (2, 320410944), (3, 213607296), (4, 160205472), (6, 106803648), (7, 91545984), (8, 80102736), (9, 71202432), (12, 53401824), (14, 45772992), (16, 40051368), (18, 35601216), (21, 30515328), (24, 26700912), (27, 23734144), (28, 22886496), (32, 20025684), (36, 17800608), (42, 15257664), (48, 13350456), (54, 11867072), (56, 11443248), (63, 10171776), (64, 10012842), (72, 8900304), (84, 7628832), (96, 6675228), (108, 5933536), (112, 5721624), (126, 5085888), (128, 5006421), (144, 4450152), (168, 3814416), (189, 3390592), (192, 3337614), (216, 2966768), (224, 2860812), (252, 2542944), (288, 2225076), (336, 1907208), (378, 1695296), (384, 1668807), (432, 1483384), (448, 1430406), (504, 1271472), (576, 1112538), (672, 953604), (756, 847648), (864, 741692), (896, 715203), (1008, 635736), (1152, 556269), (1344, 476802), (1512, 423824), (1728, 370846), (2016, 317868), (2688, 238401), (3024, 211912), (3456, 185423), (4032, 158934), (6048, 105956), (8064, 79467), (12096, 52978), (24192, 26489)]