21115159540

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1\times {\mathrm{907}}^1$

素因数の和:1265

約数の個数: 96

約数和(自身を含む): 45808963200

約数和(自身を除く): 24693803660

約数列:

[1, 2, 4, 5, 10, 20, 59, 109, 118, 181, 218, 236, 295, 362, 436, 545, 590, 724, 905, 907, 1090, 1180, 1810, 1814, 2180, 3620, 3628, 4535, 6431, 9070, 10679, 12862, 18140, 19729, 21358, 25724, 32155, 39458, 42716, 53395, 53513, 64310, 78916, 98645, 98863, 106790, 107026, 128620, 164167, 197290, 197726, 213580, 214052, 267565, 328334, 394580, 395452, 494315, 535130, 656668, 820835, 988630, 1070260, 1164011, 1641670, 1977260, 2328022, 3283340, 4656044, 5820055, 5832917, 9685853, 11640110, 11665834, 17894203, 19371706, 23280220, 23331668, 29164585, 35788406, 38743412, 48429265, 58329170, 71576812, 89471015, 96858530, 116658340, 178942030, 193717060, 357884060, 1055757977, 2111515954, 4223031908, 5278789885, 10557579770, 21115159540]

約数ペア:

[(1, 21115159540), (2, 10557579770), (4, 5278789885), (5, 4223031908), (10, 2111515954), (20, 1055757977), (59, 357884060), (109, 193717060), (118, 178942030), (181, 116658340), (218, 96858530), (236, 89471015), (295, 71576812), (362, 58329170), (436, 48429265), (545, 38743412), (590, 35788406), (724, 29164585), (905, 23331668), (907, 23280220), (1090, 19371706), (1180, 17894203), (1810, 11665834), (1814, 11640110), (2180, 9685853), (3620, 5832917), (3628, 5820055), (4535, 4656044), (6431, 3283340), (9070, 2328022), (10679, 1977260), (12862, 1641670), (18140, 1164011), (19729, 1070260), (21358, 988630), (25724, 820835), (32155, 656668), (39458, 535130), (42716, 494315), (53395, 395452), (53513, 394580), (64310, 328334), (78916, 267565), (98645, 214052), (98863, 213580), (106790, 197726), (107026, 197290), (128620, 164167)]