21682353

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:115

約数の個数: 72

約数和(自身を含む): 39299904

約数和(自身を除く): 17617551

約数列:

[1, 3, 7, 11, 21, 23, 33, 49, 53, 69, 77, 121, 147, 159, 161, 231, 253, 363, 371, 483, 539, 583, 759, 847, 1113, 1127, 1219, 1617, 1749, 1771, 2541, 2597, 2783, 3381, 3657, 4081, 5313, 5929, 6413, 7791, 8349, 8533, 12243, 12397, 13409, 17787, 19239, 19481, 25599, 28567, 37191, 40227, 44891, 58443, 59731, 85701, 93863, 134673, 136367, 147499, 179193, 281589, 314237, 409101, 442497, 657041, 942711, 1032493, 1971123, 3097479, 7227451, 21682353]

約数ペア:

[(1, 21682353), (3, 7227451), (7, 3097479), (11, 1971123), (21, 1032493), (23, 942711), (33, 657041), (49, 442497), (53, 409101), (69, 314237), (77, 281589), (121, 179193), (147, 147499), (159, 136367), (161, 134673), (231, 93863), (253, 85701), (363, 59731), (371, 58443), (483, 44891), (539, 40227), (583, 37191), (759, 28567), (847, 25599), (1113, 19481), (1127, 19239), (1219, 17787), (1617, 13409), (1749, 12397), (1771, 12243), (2541, 8533), (2597, 8349), (2783, 7791), (3381, 6413), (3657, 5929), (4081, 5313)]