16881280

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2029}}^1$

素因数の和:2061

約数の個数: 64

約数和(自身を含む): 43482600

約数和(自身を除く): 26601320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2029, 2080, 4058, 4160, 8116, 8320, 10145, 16232, 20290, 26377, 32464, 40580, 52754, 64928, 81160, 105508, 129856, 131885, 162320, 211016, 259712, 263770, 324640, 422032, 527540, 649280, 844064, 1055080, 1298560, 1688128, 2110160, 3376256, 4220320, 8440640, 16881280]

約数ペア:

[(1, 16881280), (2, 8440640), (4, 4220320), (5, 3376256), (8, 2110160), (10, 1688128), (13, 1298560), (16, 1055080), (20, 844064), (26, 649280), (32, 527540), (40, 422032), (52, 324640), (64, 263770), (65, 259712), (80, 211016), (104, 162320), (128, 131885), (130, 129856), (160, 105508), (208, 81160), (260, 64928), (320, 52754), (416, 40580), (520, 32464), (640, 26377), (832, 20290), (1040, 16232), (1664, 10145), (2029, 8320), (2080, 8116), (4058, 4160)]