1640480072

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1\times {\mathrm{317}}^1$

素因数の和:643

約数の個数: 128

約数和(自身を含む): 3985735680

約数和(自身を除く): 2345255608

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 31, 44, 56, 62, 77, 88, 124, 154, 217, 248, 271, 308, 317, 341, 434, 542, 616, 634, 682, 868, 1084, 1268, 1364, 1736, 1897, 2168, 2219, 2387, 2536, 2728, 2981, 3487, 3794, 4438, 4774, 5962, 6974, 7588, 8401, 8876, 9548, 9827, 11924, 13948, 15176, 16802, 17752, 19096, 19654, 20867, 23848, 24409, 27896, 33604, 39308, 41734, 48818, 58807, 67208, 68789, 78616, 83468, 85907, 92411, 97636, 108097, 117614, 137578, 166936, 171814, 184822, 195272, 216194, 235228, 275156, 343628, 369644, 432388, 470456, 550312, 601349, 646877, 687256, 739288, 756679, 864776, 944977, 1202698, 1293754, 1513358, 1889954, 2405396, 2587508, 2663117, 3026716, 3779908, 4810792, 5175016, 5326234, 6053432, 6614839, 7559816, 10652468, 13229678, 18641819, 21304936, 26459356, 29294287, 37283638, 52918712, 58588574, 74567276, 117177148, 149134552, 205060009, 234354296, 410120018, 820240036, 1640480072]

約数ペア:

[(1, 1640480072), (2, 820240036), (4, 410120018), (7, 234354296), (8, 205060009), (11, 149134552), (14, 117177148), (22, 74567276), (28, 58588574), (31, 52918712), (44, 37283638), (56, 29294287), (62, 26459356), (77, 21304936), (88, 18641819), (124, 13229678), (154, 10652468), (217, 7559816), (248, 6614839), (271, 6053432), (308, 5326234), (317, 5175016), (341, 4810792), (434, 3779908), (542, 3026716), (616, 2663117), (634, 2587508), (682, 2405396), (868, 1889954), (1084, 1513358), (1268, 1293754), (1364, 1202698), (1736, 944977), (1897, 864776), (2168, 756679), (2219, 739288), (2387, 687256), (2536, 646877), (2728, 601349), (2981, 550312), (3487, 470456), (3794, 432388), (4438, 369644), (4774, 343628), (5962, 275156), (6974, 235228), (7588, 216194), (8401, 195272), (8876, 184822), (9548, 171814), (9827, 166936), (11924, 137578), (13948, 117614), (15176, 108097), (16802, 97636), (17752, 92411), (19096, 85907), (19654, 83468), (20867, 78616), (23848, 68789), (24409, 67208), (27896, 58807), (33604, 48818), (39308, 41734)]