20778826240

素因数分解:

$2^9\times 5^1\times {\mathrm{41}}^1\times {\mathrm{197969}}^1$

素因数の和:198033

約数の個数: 80

約数和(自身を含む): 51035874120

約数和(自身を除く): 30257047880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 256, 320, 328, 410, 512, 640, 656, 820, 1280, 1312, 1640, 2560, 2624, 3280, 5248, 6560, 10496, 13120, 20992, 26240, 52480, 104960, 197969, 395938, 791876, 989845, 1583752, 1979690, 3167504, 3959380, 6335008, 7918760, 8116729, 12670016, 15837520, 16233458, 25340032, 31675040, 32466916, 40583645, 50680064, 63350080, 64933832, 81167290, 101360128, 126700160, 129867664, 162334580, 253400320, 259735328, 324669160, 506800640, 519470656, 649338320, 1038941312, 1298676640, 2077882624, 2597353280, 4155765248, 5194706560, 10389413120, 20778826240]

約数ペア:

[(1, 20778826240), (2, 10389413120), (4, 5194706560), (5, 4155765248), (8, 2597353280), (10, 2077882624), (16, 1298676640), (20, 1038941312), (32, 649338320), (40, 519470656), (41, 506800640), (64, 324669160), (80, 259735328), (82, 253400320), (128, 162334580), (160, 129867664), (164, 126700160), (205, 101360128), (256, 81167290), (320, 64933832), (328, 63350080), (410, 50680064), (512, 40583645), (640, 32466916), (656, 31675040), (820, 25340032), (1280, 16233458), (1312, 15837520), (1640, 12670016), (2560, 8116729), (2624, 7918760), (3280, 6335008), (5248, 3959380), (6560, 3167504), (10496, 1979690), (13120, 1583752), (20992, 989845), (26240, 791876), (52480, 395938), (104960, 197969)]