19998972

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1301}}^1$

素因数の和:1379

約数の個数: 72

約数和(自身を含む): 58767072

約数和(自身を除く): 38768100

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 61, 63, 84, 122, 126, 183, 244, 252, 366, 427, 549, 732, 854, 1098, 1281, 1301, 1708, 2196, 2562, 2602, 3843, 3903, 5124, 5204, 7686, 7806, 9107, 11709, 15372, 15612, 18214, 23418, 27321, 36428, 46836, 54642, 79361, 81963, 109284, 158722, 163926, 238083, 317444, 327852, 476166, 555527, 714249, 952332, 1111054, 1428498, 1666581, 2222108, 2856996, 3333162, 4999743, 6666324, 9999486, 19998972]

約数ペア:

[(1, 19998972), (2, 9999486), (3, 6666324), (4, 4999743), (6, 3333162), (7, 2856996), (9, 2222108), (12, 1666581), (14, 1428498), (18, 1111054), (21, 952332), (28, 714249), (36, 555527), (42, 476166), (61, 327852), (63, 317444), (84, 238083), (122, 163926), (126, 158722), (183, 109284), (244, 81963), (252, 79361), (366, 54642), (427, 46836), (549, 36428), (732, 27321), (854, 23418), (1098, 18214), (1281, 15612), (1301, 15372), (1708, 11709), (2196, 9107), (2562, 7806), (2602, 7686), (3843, 5204), (3903, 5124)]