15721465221

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1217}}^1\times {\mathrm{2663}}^1$

素因数の和:3911

約数の個数: 72

約数和(自身を含む): 28852334784

約数和(自身を除く): 13130869563

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 441, 539, 693, 1217, 1617, 2663, 3651, 4851, 7989, 8519, 10953, 13387, 18641, 23967, 25557, 29293, 40161, 55923, 59633, 76671, 87879, 93709, 120483, 130487, 167769, 178899, 205051, 263637, 281127, 391461, 536697, 615153, 655963, 843381, 1174383, 1435357, 1845459, 1967889, 3240871, 4306071, 5903667, 9722613, 12918213, 22686097, 29167839, 35649581, 68058291, 106948743, 158802679, 204174873, 249547067, 320846229, 476408037, 748641201, 1429224111, 1746829469, 2245923603, 5240488407, 15721465221]

約数ペア:

[(1, 15721465221), (3, 5240488407), (7, 2245923603), (9, 1746829469), (11, 1429224111), (21, 748641201), (33, 476408037), (49, 320846229), (63, 249547067), (77, 204174873), (99, 158802679), (147, 106948743), (231, 68058291), (441, 35649581), (539, 29167839), (693, 22686097), (1217, 12918213), (1617, 9722613), (2663, 5903667), (3651, 4306071), (4851, 3240871), (7989, 1967889), (8519, 1845459), (10953, 1435357), (13387, 1174383), (18641, 843381), (23967, 655963), (25557, 615153), (29293, 536697), (40161, 391461), (55923, 281127), (59633, 263637), (76671, 205051), (87879, 178899), (93709, 167769), (120483, 130487)]