19955784

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 52050240

約数和(自身を除く): 32094456

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 61, 86, 122, 129, 172, 183, 244, 258, 317, 344, 366, 488, 516, 634, 732, 951, 1032, 1268, 1464, 1902, 2536, 2623, 3804, 5246, 7608, 7869, 10492, 13631, 15738, 19337, 20984, 27262, 31476, 38674, 40893, 54524, 58011, 62952, 77348, 81786, 109048, 116022, 154696, 163572, 232044, 327144, 464088, 831491, 1662982, 2494473, 3325964, 4988946, 6651928, 9977892, 19955784]

約数ペア:

[(1, 19955784), (2, 9977892), (3, 6651928), (4, 4988946), (6, 3325964), (8, 2494473), (12, 1662982), (24, 831491), (43, 464088), (61, 327144), (86, 232044), (122, 163572), (129, 154696), (172, 116022), (183, 109048), (244, 81786), (258, 77348), (317, 62952), (344, 58011), (366, 54524), (488, 40893), (516, 38674), (634, 31476), (732, 27262), (951, 20984), (1032, 19337), (1268, 15738), (1464, 13631), (1902, 10492), (2536, 7869), (2623, 7608), (3804, 5246)]