21870954

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:340

約数の個数: 72

約数和(自身を含む): 55832868

約数和(自身を除く): 33961914

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 137, 147, 181, 274, 294, 362, 411, 441, 543, 822, 882, 959, 1086, 1233, 1267, 1629, 1918, 2466, 2534, 2877, 3258, 3801, 5754, 6713, 7602, 8631, 8869, 11403, 13426, 17262, 17738, 20139, 22806, 24797, 26607, 40278, 49594, 53214, 60417, 74391, 79821, 120834, 148782, 159642, 173579, 223173, 347158, 446346, 520737, 1041474, 1215053, 1562211, 2430106, 3124422, 3645159, 7290318, 10935477, 21870954]

約数ペア:

[(1, 21870954), (2, 10935477), (3, 7290318), (6, 3645159), (7, 3124422), (9, 2430106), (14, 1562211), (18, 1215053), (21, 1041474), (42, 520737), (49, 446346), (63, 347158), (98, 223173), (126, 173579), (137, 159642), (147, 148782), (181, 120834), (274, 79821), (294, 74391), (362, 60417), (411, 53214), (441, 49594), (543, 40278), (822, 26607), (882, 24797), (959, 22806), (1086, 20139), (1233, 17738), (1267, 17262), (1629, 13426), (1918, 11403), (2466, 8869), (2534, 8631), (2877, 7602), (3258, 6713), (3801, 5754)]