21159560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^2\times {\mathrm{37}}^1$

素因数の和:123

約数の個数: 96

約数和(自身を含む): 53618760

約数和(自身を除く): 32459200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 29, 34, 37, 40, 58, 68, 74, 85, 116, 136, 145, 148, 170, 185, 232, 290, 296, 340, 370, 493, 580, 629, 680, 740, 841, 986, 1073, 1160, 1258, 1480, 1682, 1972, 2146, 2465, 2516, 3145, 3364, 3944, 4205, 4292, 4930, 5032, 5365, 6290, 6728, 8410, 8584, 9860, 10730, 12580, 14297, 16820, 18241, 19720, 21460, 25160, 28594, 31117, 33640, 36482, 42920, 57188, 62234, 71485, 72964, 91205, 114376, 124468, 142970, 145928, 155585, 182410, 248936, 285940, 311170, 364820, 528989, 571880, 622340, 729640, 1057978, 1244680, 2115956, 2644945, 4231912, 5289890, 10579780, 21159560]

約数ペア:

[(1, 21159560), (2, 10579780), (4, 5289890), (5, 4231912), (8, 2644945), (10, 2115956), (17, 1244680), (20, 1057978), (29, 729640), (34, 622340), (37, 571880), (40, 528989), (58, 364820), (68, 311170), (74, 285940), (85, 248936), (116, 182410), (136, 155585), (145, 145928), (148, 142970), (170, 124468), (185, 114376), (232, 91205), (290, 72964), (296, 71485), (340, 62234), (370, 57188), (493, 42920), (580, 36482), (629, 33640), (680, 31117), (740, 28594), (841, 25160), (986, 21460), (1073, 19720), (1160, 18241), (1258, 16820), (1480, 14297), (1682, 12580), (1972, 10730), (2146, 9860), (2465, 8584), (2516, 8410), (3145, 6728), (3364, 6290), (3944, 5365), (4205, 5032), (4292, 4930)]