20280482560

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1218779}}^1$

素因数の和:1218813

約数の個数: 72

約数和(自身を含む): 52314912720

約数和(自身を除く): 32034430160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 8320, 16640, 1218779, 2437558, 4875116, 6093895, 9750232, 12187790, 15844127, 19500464, 24375580, 31688254, 39000928, 48751160, 63376508, 78001856, 79220635, 97502320, 126753016, 156003712, 158441270, 195004640, 253506032, 312007424, 316882540, 390009280, 507012064, 633765080, 780018560, 1014024128, 1267530160, 1560037120, 2028048256, 2535060320, 4056096512, 5070120640, 10140241280, 20280482560]

約数ペア:

[(1, 20280482560), (2, 10140241280), (4, 5070120640), (5, 4056096512), (8, 2535060320), (10, 2028048256), (13, 1560037120), (16, 1267530160), (20, 1014024128), (26, 780018560), (32, 633765080), (40, 507012064), (52, 390009280), (64, 316882540), (65, 312007424), (80, 253506032), (104, 195004640), (128, 158441270), (130, 156003712), (160, 126753016), (208, 97502320), (256, 79220635), (260, 78001856), (320, 63376508), (416, 48751160), (520, 39000928), (640, 31688254), (832, 24375580), (1040, 19500464), (1280, 15844127), (1664, 12187790), (2080, 9750232), (3328, 6093895), (4160, 4875116), (8320, 2437558), (16640, 1218779)]