17989998

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 41664000

約数和(自身を除く): 23674002

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 57, 61, 78, 114, 122, 183, 199, 247, 366, 398, 494, 597, 741, 793, 1159, 1194, 1482, 1586, 2318, 2379, 2587, 3477, 3781, 4758, 5174, 6954, 7562, 7761, 11343, 12139, 15067, 15522, 22686, 24278, 30134, 36417, 45201, 49153, 72834, 90402, 98306, 147459, 157807, 230641, 294918, 315614, 461282, 473421, 691923, 946842, 1383846, 2998333, 5996666, 8994999, 17989998]

約数ペア:

[(1, 17989998), (2, 8994999), (3, 5996666), (6, 2998333), (13, 1383846), (19, 946842), (26, 691923), (38, 473421), (39, 461282), (57, 315614), (61, 294918), (78, 230641), (114, 157807), (122, 147459), (183, 98306), (199, 90402), (247, 72834), (366, 49153), (398, 45201), (494, 36417), (597, 30134), (741, 24278), (793, 22686), (1159, 15522), (1194, 15067), (1482, 12139), (1586, 11343), (2318, 7761), (2379, 7562), (2587, 6954), (3477, 5174), (3781, 4758)]