1640200640

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{941}}^1$

素因数の和:1390

約数の個数: 112

約数和(自身を含む): 4220687520

約数和(自身を除く): 2580486880

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 419, 520, 832, 838, 941, 1040, 1676, 1882, 2080, 2095, 3352, 3764, 4160, 4190, 4705, 5447, 6704, 7528, 8380, 9410, 10894, 12233, 13408, 15056, 16760, 18820, 21788, 24466, 26816, 27235, 30112, 33520, 37640, 43576, 48932, 54470, 60224, 61165, 67040, 75280, 87152, 97864, 108940, 122330, 134080, 150560, 174304, 195728, 217880, 244660, 301120, 348608, 391456, 394279, 435760, 489320, 782912, 788558, 871520, 978640, 1577116, 1743040, 1957280, 1971395, 3154232, 3914560, 3942790, 5125627, 6308464, 7885580, 10251254, 12616928, 15771160, 20502508, 25233856, 25628135, 31542320, 41005016, 51256270, 63084640, 82010032, 102512540, 126169280, 164020064, 205025080, 328040128, 410050160, 820100320, 1640200640]

約数ペア:

[(1, 1640200640), (2, 820100320), (4, 410050160), (5, 328040128), (8, 205025080), (10, 164020064), (13, 126169280), (16, 102512540), (20, 82010032), (26, 63084640), (32, 51256270), (40, 41005016), (52, 31542320), (64, 25628135), (65, 25233856), (80, 20502508), (104, 15771160), (130, 12616928), (160, 10251254), (208, 7885580), (260, 6308464), (320, 5125627), (416, 3942790), (419, 3914560), (520, 3154232), (832, 1971395), (838, 1957280), (941, 1743040), (1040, 1577116), (1676, 978640), (1882, 871520), (2080, 788558), (2095, 782912), (3352, 489320), (3764, 435760), (4160, 394279), (4190, 391456), (4705, 348608), (5447, 301120), (6704, 244660), (7528, 217880), (8380, 195728), (9410, 174304), (10894, 150560), (12233, 134080), (13408, 122330), (15056, 108940), (16760, 97864), (18820, 87152), (21788, 75280), (24466, 67040), (26816, 61165), (27235, 60224), (30112, 54470), (33520, 48932), (37640, 43576)]