21659440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:338

約数の個数: 80

約数和(自身を含む): 55639296

約数和(自身を除く): 33979856

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 151, 163, 176, 220, 302, 326, 440, 604, 652, 755, 815, 880, 1208, 1304, 1510, 1630, 1661, 1793, 2416, 2608, 3020, 3260, 3322, 3586, 6040, 6520, 6644, 7172, 8305, 8965, 12080, 13040, 13288, 14344, 16610, 17930, 24613, 26576, 28688, 33220, 35860, 49226, 66440, 71720, 98452, 123065, 132880, 143440, 196904, 246130, 270743, 393808, 492260, 541486, 984520, 1082972, 1353715, 1969040, 2165944, 2707430, 4331888, 5414860, 10829720, 21659440]

約数ペア:

[(1, 21659440), (2, 10829720), (4, 5414860), (5, 4331888), (8, 2707430), (10, 2165944), (11, 1969040), (16, 1353715), (20, 1082972), (22, 984520), (40, 541486), (44, 492260), (55, 393808), (80, 270743), (88, 246130), (110, 196904), (151, 143440), (163, 132880), (176, 123065), (220, 98452), (302, 71720), (326, 66440), (440, 49226), (604, 35860), (652, 33220), (755, 28688), (815, 26576), (880, 24613), (1208, 17930), (1304, 16610), (1510, 14344), (1630, 13288), (1661, 13040), (1793, 12080), (2416, 8965), (2608, 8305), (3020, 7172), (3260, 6644), (3322, 6520), (3586, 6040)]