28367031

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 49051008

約数和(自身を除く): 20683977

約数列:

[1, 3, 7, 11, 21, 33, 49, 53, 77, 147, 159, 231, 331, 371, 539, 583, 993, 1113, 1617, 1749, 2317, 2597, 3641, 4081, 6951, 7791, 10923, 12243, 16219, 17543, 25487, 28567, 48657, 52629, 76461, 85701, 122801, 178409, 192973, 368403, 535227, 578919, 859607, 1350811, 2578821, 4052433, 9455677, 28367031]

約数ペア:

[(1, 28367031), (3, 9455677), (7, 4052433), (11, 2578821), (21, 1350811), (33, 859607), (49, 578919), (53, 535227), (77, 368403), (147, 192973), (159, 178409), (231, 122801), (331, 85701), (371, 76461), (539, 52629), (583, 48657), (993, 28567), (1113, 25487), (1617, 17543), (1749, 16219), (2317, 12243), (2597, 10923), (3641, 7791), (4081, 6951)]