21899930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 45390240

約数和(自身を除く): 23490310

約数列:

[1, 2, 5, 10, 13, 26, 29, 37, 58, 65, 74, 130, 145, 157, 185, 290, 314, 370, 377, 481, 754, 785, 962, 1073, 1570, 1885, 2041, 2146, 2405, 3770, 4082, 4553, 4810, 5365, 5809, 9106, 10205, 10730, 11618, 13949, 20410, 22765, 27898, 29045, 45530, 58090, 59189, 69745, 75517, 118378, 139490, 151034, 168461, 295945, 336922, 377585, 591890, 755170, 842305, 1684610, 2189993, 4379986, 10949965, 21899930]

約数ペア:

[(1, 21899930), (2, 10949965), (5, 4379986), (10, 2189993), (13, 1684610), (26, 842305), (29, 755170), (37, 591890), (58, 377585), (65, 336922), (74, 295945), (130, 168461), (145, 151034), (157, 139490), (185, 118378), (290, 75517), (314, 69745), (370, 59189), (377, 58090), (481, 45530), (754, 29045), (785, 27898), (962, 22765), (1073, 20410), (1570, 13949), (1885, 11618), (2041, 10730), (2146, 10205), (2405, 9106), (3770, 5809), (4082, 5365), (4553, 4810)]