21387618

素因数分解:

$2^1\times 3^3\times 7^2\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 56635200

約数和(自身を除く): 35247582

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 54, 59, 63, 98, 118, 126, 137, 147, 177, 189, 274, 294, 354, 378, 411, 413, 441, 531, 822, 826, 882, 959, 1062, 1233, 1239, 1323, 1593, 1918, 2466, 2478, 2646, 2877, 2891, 3186, 3699, 3717, 5754, 5782, 6713, 7398, 7434, 8083, 8631, 8673, 11151, 13426, 16166, 17262, 17346, 20139, 22302, 24249, 25893, 26019, 40278, 48498, 51786, 52038, 56581, 60417, 72747, 78057, 113162, 120834, 145494, 156114, 169743, 181251, 218241, 339486, 362502, 396067, 436482, 509229, 792134, 1018458, 1188201, 1527687, 2376402, 3055374, 3564603, 7129206, 10693809, 21387618]

約数ペア:

[(1, 21387618), (2, 10693809), (3, 7129206), (6, 3564603), (7, 3055374), (9, 2376402), (14, 1527687), (18, 1188201), (21, 1018458), (27, 792134), (42, 509229), (49, 436482), (54, 396067), (59, 362502), (63, 339486), (98, 218241), (118, 181251), (126, 169743), (137, 156114), (147, 145494), (177, 120834), (189, 113162), (274, 78057), (294, 72747), (354, 60417), (378, 56581), (411, 52038), (413, 51786), (441, 48498), (531, 40278), (822, 26019), (826, 25893), (882, 24249), (959, 22302), (1062, 20139), (1233, 17346), (1239, 17262), (1323, 16166), (1593, 13426), (1918, 11151), (2466, 8673), (2478, 8631), (2646, 8083), (2877, 7434), (2891, 7398), (3186, 6713), (3699, 5782), (3717, 5754)]