661509921280

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19877101}}^1$

素因数の和:19877137

約数の個数: 80

約数和(自身を含む): 1708079129064

約数和(自身を除く): 1046569207784

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, 512, 520, 640, 832, 1040, 1280, 1664, 2080, 2560, 3328, 4160, 6656, 8320, 16640, 33280, 19877101, 39754202, 79508404, 99385505, 159016808, 198771010, 258402313, 318033616, 397542020, 516804626, 636067232, 795084040, 1033609252, 1272134464, 1292011565, 1590168080, 2067218504, 2544268928, 2584023130, 3180336160, 4134437008, 5088537856, 5168046260, 6360672320, 8268874016, 10177075712, 10336092520, 12721344640, 16537748032, 20672185040, 25442689280, 33075496064, 41344370080, 50885378560, 66150992128, 82688740160, 132301984256, 165377480320, 330754960640, 661509921280]

約数ペア:

[(1, 661509921280), (2, 330754960640), (4, 165377480320), (5, 132301984256), (8, 82688740160), (10, 66150992128), (13, 50885378560), (16, 41344370080), (20, 33075496064), (26, 25442689280), (32, 20672185040), (40, 16537748032), (52, 12721344640), (64, 10336092520), (65, 10177075712), (80, 8268874016), (104, 6360672320), (128, 5168046260), (130, 5088537856), (160, 4134437008), (208, 3180336160), (256, 2584023130), (260, 2544268928), (320, 2067218504), (416, 1590168080), (512, 1292011565), (520, 1272134464), (640, 1033609252), (832, 795084040), (1040, 636067232), (1280, 516804626), (1664, 397542020), (2080, 318033616), (2560, 258402313), (3328, 198771010), (4160, 159016808), (6656, 99385505), (8320, 79508404), (16640, 39754202), (33280, 19877101)]