21641928

素因数分解:

$2^3\times 3^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{239}}^1$

素因数の和:280

約数の個数: 128

約数和(自身を含む): 69120000

約数和(自身を除く): 47478072

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 49, 56, 66, 77, 84, 88, 98, 132, 147, 154, 168, 196, 231, 239, 264, 294, 308, 343, 392, 462, 478, 539, 588, 616, 686, 717, 924, 956, 1029, 1078, 1176, 1372, 1434, 1617, 1673, 1848, 1912, 2058, 2156, 2629, 2744, 2868, 3234, 3346, 3773, 4116, 4312, 5019, 5258, 5736, 6468, 6692, 7546, 7887, 8232, 10038, 10516, 11319, 11711, 12936, 13384, 15092, 15774, 18403, 20076, 21032, 22638, 23422, 30184, 31548, 35133, 36806, 40152, 45276, 46844, 55209, 63096, 70266, 73612, 81977, 90552, 93688, 110418, 128821, 140532, 147224, 163954, 220836, 245931, 257642, 281064, 327908, 386463, 441672, 491862, 515284, 655816, 772926, 901747, 983724, 1030568, 1545852, 1803494, 1967448, 2705241, 3091704, 3606988, 5410482, 7213976, 10820964, 21641928]

約数ペア:

[(1, 21641928), (2, 10820964), (3, 7213976), (4, 5410482), (6, 3606988), (7, 3091704), (8, 2705241), (11, 1967448), (12, 1803494), (14, 1545852), (21, 1030568), (22, 983724), (24, 901747), (28, 772926), (33, 655816), (42, 515284), (44, 491862), (49, 441672), (56, 386463), (66, 327908), (77, 281064), (84, 257642), (88, 245931), (98, 220836), (132, 163954), (147, 147224), (154, 140532), (168, 128821), (196, 110418), (231, 93688), (239, 90552), (264, 81977), (294, 73612), (308, 70266), (343, 63096), (392, 55209), (462, 46844), (478, 45276), (539, 40152), (588, 36806), (616, 35133), (686, 31548), (717, 30184), (924, 23422), (956, 22638), (1029, 21032), (1078, 20076), (1176, 18403), (1372, 15774), (1434, 15092), (1617, 13384), (1673, 12936), (1848, 11711), (1912, 11319), (2058, 10516), (2156, 10038), (2629, 8232), (2744, 7887), (2868, 7546), (3234, 6692), (3346, 6468), (3773, 5736), (4116, 5258), (4312, 5019)]