20721492

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:170

約数の個数: 108

約数和(自身を含む): 59256288

約数和(自身を除く): 38534796

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 67, 71, 99, 121, 132, 134, 142, 198, 201, 213, 242, 268, 284, 363, 396, 402, 426, 484, 603, 639, 726, 737, 781, 804, 852, 1089, 1206, 1278, 1452, 1474, 1562, 2178, 2211, 2343, 2412, 2556, 2948, 3124, 4356, 4422, 4686, 4757, 6633, 7029, 8107, 8591, 8844, 9372, 9514, 13266, 14058, 14271, 16214, 17182, 19028, 24321, 25773, 26532, 28116, 28542, 32428, 34364, 42813, 48642, 51546, 52327, 57084, 72963, 77319, 85626, 97284, 103092, 104654, 145926, 154638, 156981, 171252, 209308, 291852, 309276, 313962, 470943, 575597, 627924, 941886, 1151194, 1726791, 1883772, 2302388, 3453582, 5180373, 6907164, 10360746, 20721492]

約数ペア:

[(1, 20721492), (2, 10360746), (3, 6907164), (4, 5180373), (6, 3453582), (9, 2302388), (11, 1883772), (12, 1726791), (18, 1151194), (22, 941886), (33, 627924), (36, 575597), (44, 470943), (66, 313962), (67, 309276), (71, 291852), (99, 209308), (121, 171252), (132, 156981), (134, 154638), (142, 145926), (198, 104654), (201, 103092), (213, 97284), (242, 85626), (268, 77319), (284, 72963), (363, 57084), (396, 52327), (402, 51546), (426, 48642), (484, 42813), (603, 34364), (639, 32428), (726, 28542), (737, 28116), (781, 26532), (804, 25773), (852, 24321), (1089, 19028), (1206, 17182), (1278, 16214), (1452, 14271), (1474, 14058), (1562, 13266), (2178, 9514), (2211, 9372), (2343, 8844), (2412, 8591), (2556, 8107), (2948, 7029), (3124, 6633), (4356, 4757), (4422, 4686)]