19980996

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{3011}}^1$

素因数の和:3104

約数の個数: 48

約数和(自身を含む): 53975040

約数和(自身を除く): 33994044

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 79, 84, 158, 237, 316, 474, 553, 948, 1106, 1659, 2212, 3011, 3318, 6022, 6636, 9033, 12044, 18066, 21077, 36132, 42154, 63231, 84308, 126462, 237869, 252924, 475738, 713607, 951476, 1427214, 1665083, 2854428, 3330166, 4995249, 6660332, 9990498, 19980996]

約数ペア:

[(1, 19980996), (2, 9990498), (3, 6660332), (4, 4995249), (6, 3330166), (7, 2854428), (12, 1665083), (14, 1427214), (21, 951476), (28, 713607), (42, 475738), (79, 252924), (84, 237869), (158, 126462), (237, 84308), (316, 63231), (474, 42154), (553, 36132), (948, 21077), (1106, 18066), (1659, 12044), (2212, 9033), (3011, 6636), (3318, 6022)]